/* ===== CSS Variables - Apple Style ===== */
:root {
    /* Colors - Reference Gradient Theme */
    --color-bg-primary: #f5f5f7;
    /* Apple Light Gray */
    --color-bg-secondary: #ffffff;
    /* Pure White Cards */
    --color-bg-tertiary: rgba(0, 0, 0, 0.02);
    /* Subtle Fill */

    /* Accent Colors - Apple Blue Theme */
    --color-accent-primary: #0071e3;
    --color-accent-secondary: #0077ed;
    --color-accent-gradient: linear-gradient(135deg, #0071e3 0%, #0077ed 100%);
    --color-accent-hover: #0077ED;
    /* Consistent Hover */

    /* Status Colors */
    --color-success: #34c759;
    --color-warning: #ffcc00;
    --color-error: #ff3b30;
    --color-info: #5ac8fa;

    /* Text Colors */
    --color-text-primary: #1d1d1f;
    --color-text-secondary: #86868b;
    --color-text-tertiary: #a1a1a6;
    --color-text-inverse: #ffffff;

    /* Border & Shadow */
    --color-border: #d2d2d7;
    --color-border-hover: #0071e3;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
    --shadow-card: 0 10px 40px -10px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 20px 50px -15px rgba(0, 0, 0, 0.15);

    /* Layout */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 980px;

    /* Typography - 'Segoe UI' */
    --font-sans: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.375rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-premium: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===== Premium Hover Animation Base ===== */
.btn-animate {
    transition: transform var(--transition-premium), box-shadow var(--transition-normal), filter var(--transition-fast) !important;
}

.btn-animate:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
    filter: brightness(1.05);
}

.btn-animate:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ===== Layout ===== */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== Header ===== */
.header {
    background: rgba(255, 255, 255, 0.72);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 56px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-separator {
    color: #000000;
    margin: 0 0.4rem;
    font-weight: 300;
    opacity: 0.6;
}

.site-tagline {
    font-size: 0.9rem;
    color: #333333;
    font-weight: 400;
    letter-spacing: 0.2px;
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: #0071e3;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #0071e3 0%, #0077ed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}



.page-tagline {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--color-text-primary);
    margin: 2rem 0;
    text-shadow: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    letter-spacing: -0.02em;
}

.pricing-tag {
    font-size: 1rem;
    font-weight: 500;
    color: #0071e3;
    background: rgba(0, 113, 227, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    border: 1px solid rgba(0, 113, 227, 0.2);
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    padding: 1.5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* ===== Hero Banner ===== */
.hero-banner {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    animation: fadeInDown 0.6s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 1.25rem;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 113, 227, 0.2);
    border-radius: var(--radius-full);
    box-shadow: 0 4px 16px rgba(0, 113, 227, 0.08);
    transition: all 0.3s ease;
}

.hero-badge:hover {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(0, 113, 227, 0.4);
}

.badge-icon {
    font-size: 1.2rem;
    animation: pulse 2s infinite;
}

.badge-text {
    font-size: 0.95rem;
    color: var(--color-text-primary);
    letter-spacing: 0.3px;
    font-weight: 500;
}

.badge-text strong {
    color: var(--color-accent-primary);
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* ===== Steps Indicator ===== */
.steps-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.step {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-text-tertiary);
    transition: all 0.3s ease;
    font-weight: 500;
}

.step.active {
    background: #ffffff;
    color: var(--color-text-primary);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
}

.step.completed {
    background: transparent;
    color: var(--color-text-secondary);
}

.step-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.step.active .step-number {
    background: rgba(0, 113, 227, 0.1);
    color: var(--color-accent-primary);
}

.step.completed .step-number {
    background: var(--color-success);
    color: white;
}

.step-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.step-line {
    width: 40px;
    height: 2px;
    background: var(--color-border);
}

/* ===== Content Grid ===== */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 900px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Card ===== */
.card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.card-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
}

.card-title .icon {
    width: 20px;
    height: 20px;
    color: var(--color-accent-primary);
}

/* ===== Upload Card ===== */
.upload-zone {
    border: 2px dashed #d2d2d7;
    border-radius: var(--radius-lg);
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #fbfbfe;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.upload-zone:hover {
    border-color: var(--color-accent-primary);
    background: #f4f8ff;
    transform: scale(1.01);
}

.upload-zone.dragover,
.upload-zone.drag-over {
    border-color: var(--color-accent-primary);
    background: rgba(0, 113, 227, 0.05);
    transform: scale(1.02);
}

.upload-icon {
    width: 64px;
    height: 64px;
    color: var(--color-accent-primary);
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.upload-icon svg {
    width: 100%;
    height: 100%;
}

.upload-text {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.upload-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: 0.5rem;
}

.upload-formats {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

/* ===== Upload Progress ===== */
.upload-progress {
    padding: 1.5rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.file-name {
    font-weight: 500;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}

.progress-percent {
    font-weight: 600;
    color: var(--color-accent-primary);
}

.progress-bar {
    height: 10px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: var(--color-accent-primary);
    border-radius: var(--radius-full);
    transition: width 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
    width: 0%;
}

.progress-status {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ===== Audio Player Section ===== */
.audio-player-section {
    padding: 1.5rem;
}

.audio-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.audio-icon {
    width: 40px;
    height: 40px;
    color: var(--color-accent-primary);
    background: var(--color-bg-tertiary);
    padding: 0.5rem;
    border-radius: var(--radius-md);
}

.audio-details {
    flex: 1;
}

.audio-name {
    display: block;
    font-weight: 500;
    color: var(--color-text-primary);
}

.audio-size {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.audio-controls {
    width: 100%;
    margin-bottom: 1rem;
}

/* ===== Instructions ===== */
.instructions {
    padding: 1rem 1.5rem;
    background: var(--color-bg-tertiary);
    border-top: 1px solid var(--color-border);
}

.instructions h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.instructions ol {
    padding-left: 1.25rem;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.instructions li {
    margin-bottom: 0.25rem;
}

/* ===== Status Card ===== */
.status-content {
    padding: 2rem;
    text-align: center;
}

.processing-animation {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-bottom: 1rem;
}

.wave-bar {
    width: 4px;
    height: 24px;
    background: var(--color-accent-gradient);
    border-radius: 2px;
    animation: wave 1s ease-in-out infinite;
}

.wave-bar:nth-child(2) {
    animation-delay: 0.1s;
}

.wave-bar:nth-child(3) {
    animation-delay: 0.2s;
}

.wave-bar:nth-child(4) {
    animation-delay: 0.3s;
}

.wave-bar:nth-child(5) {
    animation-delay: 0.4s;
}

@keyframes wave {

    0%,
    100% {
        transform: scaleY(0.5);
    }

    50% {
        transform: scaleY(1);
    }
}

.status-text {
    color: var(--color-text-secondary);
}

.spinning {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* ===== Settings Card ===== */
.subtitle-preview {
    padding: 1rem;
}

.preview-screen {
    position: relative;
    background: #1a1a2e;
    border-radius: var(--radius-md);
    height: 140px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.preview-label {
    position: absolute;
    top: 0.5rem;
    left: 0.75rem;
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.3);
}

.preview-subtitle {
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    text-align: center;
    transition: all var(--transition-normal);
}

.style-options {
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.style-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.style-option label {
    min-width: 50px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

/* ===== Translate Section (Prominent) ===== */
.translate-section {
    padding: 1.25rem;
    border-bottom: 1px solid var(--color-border);
}

.translate-section.highlight {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    margin: 1rem;
    border-bottom: none;
}

.translate-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.translate-icon {
    width: 24px;
    height: 24px;
    color: var(--color-accent-primary);
}

.translate-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
}

.translate-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: 1rem;
}

.translate-controls {
    display: flex;
    gap: 0.75rem;
}

.btn-translate {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: white;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.btn-translate:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.btn-translate:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ===== Audio Actions ===== */
.audio-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

/* ===== Download Section ===== */
.download-section {
    padding: 1rem 1.25rem;
}

.download-section h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 0.75rem;
}

.download-buttons {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.use-translation-label {
    font-size: var(--font-size-sm);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--color-accent-gradient);
    color: white;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-border);
}

/* 移除通用 btn 的默认 hover 偏移，由 btn-animate 精确控制 */
.btn:hover {
    transform: none;
}

.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-xs);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== Form Elements ===== */
.select {
    flex: 1;
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    cursor: pointer;
}

.select:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.color-picker {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.color-picker input[type="color"] {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.color-picker span {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    font-family: monospace;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent-primary);
}

/* ===== Loading Overlay ===== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.loading-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    background: var(--color-bg-secondary);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-bg-tertiary);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

.loading-text {
    color: var(--color-text-secondary);
}

/* ===== Toast ===== */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-left: 3px solid var(--color-success);
}

.toast.error {
    border-left: 3px solid var(--color-error);
}

.toast.info {
    border-left: 3px solid var(--color-info);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ===== Modal Styles ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    backdrop-filter: blur(4px);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--color-bg-secondary);
    width: 90%;
    max-width: 500px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    transform: scale(0.95);
    transition: transform var(--transition-normal);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.125rem;
    color: var(--color-text-primary);
}

.btn-close {
    background: none;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    transition: color 0.2s;
    display: flex;
}

.btn-close:hover {
    color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    background: var(--color-bg-tertiary);
}

/* ===== Disabled Card State ===== */
.settings-card.disabled {
    opacity: 0.5;
    pointer-events: none;
    position: relative;
}

.settings-card.disabled::after {
    content: '请先上传视频并完成识别';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    z-index: 10;
}

.settings-card:not(.disabled) {
    opacity: 1;
    pointer-events: auto;
}

/* ===== NEW: Centered Layout ===== */
.main-content.centered-layout {
    max-width: 700px;
    padding: 2rem 1.5rem;
}

/* ===== NEW: Upload Section ===== */
.upload-section {
    margin-bottom: 1.5rem;
}

.upload-card-large {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

/* Language Selector */
.language-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.language-selector label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.source-lang-select {
    flex: 1;
    max-width: 200px;
}

/* Language Settings Grid */
.language-settings {
    margin-bottom: 1.5rem;
}

.language-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.language-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.language-item label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.language-item .select {
    width: 100%;
}

/* Upload Instructions */
.upload-instructions {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    background: rgba(0, 0, 0, 0.02);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.upload-instructions p {
    margin: 0 0 0.5rem;
}

.upload-instructions ol {
    margin: 0;
    padding-left: 1.25rem;
}

.upload-instructions li {
    margin-bottom: 0.25rem;
    line-height: 1.5;
}

/* File Info Box (Step 2) */
.file-info-box {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: #F0F7FF;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    color: var(--color-text-primary);
}

.file-info-box svg {
    color: var(--color-accent-primary);
    flex-shrink: 0;
}

.selected-file-name {
    flex: 1;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-change-file {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-change-file:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    transform: translateY(-1px) scale(1.02);
}

/* Start Processing Button */
.btn-start-processing {
    width: 100%;
    max-width: 320px;
    margin: 1.5rem auto 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    background: #0071e3;
    color: white;
    border: none;
    border-radius: 980px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-start-processing:hover {
    background: #0077ED;
    transform: translateY(-3px) scale(1.05);
}

.btn-start-processing:active {
    transform: scale(0.98);
}

/* Large Upload Zone */
.upload-zone-large {
    border: 2px dashed #d2d2d7;
    border-radius: var(--radius-lg);
    padding: 3.5rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #fbfbfe;
}

.upload-zone-large:hover {
    border-color: var(--color-accent-primary);
    background: #f4f8ff;
    transform: scale(1.02);
}

.upload-zone-large.drag-over {
    border-color: var(--color-accent-primary);
    background: rgba(0, 113, 227, 0.05);
    transform: scale(1.04);
}

.upload-icon-large {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    color: var(--color-accent-primary);
    opacity: 0.9;
}

.upload-icon-large svg {
    width: 100%;
    height: 100%;
}

.upload-text-large {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

/* ===== NEW: Processing Section ===== */
.processing-section {
    margin-bottom: 1.5rem;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.processing-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-card);
    border: none;
    text-align: center;
}

.processing-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.processing-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.processing-status {
    color: var(--color-text-secondary);
    margin-top: 1rem;
}

.progress-bar-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

.progress-bar-wrapper .progress-bar {
    flex: 1;
}

/* ===== NEW: Results Section ===== */
.results-section {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    animation: fadeIn 0.4s ease;
    padding-top: 1.5rem;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Audio Card */
.audio-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow-card);
    border: none;
}

.audio-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
    font-weight: 500;
}

.audio-player-full {
    width: 100%;
    height: 40px;
}

/* Translate Card */
.translate-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow-card);
    border: none;
}

.translate-header-section {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--color-accent-primary);
    font-weight: 600;
}

.optional-badge {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.125rem 0.5rem;
    background: rgba(0, 113, 227, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-accent-primary);
}

.translate-controls-row {
    display: flex;
    gap: 0.75rem;
}

.translate-controls-row .select {
    flex: 1;
}

.btn-translate {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.5rem;
    background: #0071e3;
    color: white;
    border: none;
    border-radius: 980px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-translate:hover {
    background: #0077ED;
    transform: translateY(-2px) scale(1.03);
}

.btn-translate:active {
    transform: scale(0.98);
}

/* Download Card */
.download-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow-card);
    border: none;
}

.download-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.download-buttons-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.btn-download-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.25rem 1rem;
    background: #ffffff;
    border: 2px solid #f5f5f7;
    border-radius: 16px;
    cursor: pointer;
    transition: all var(--transition-normal);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-sm);
}

.btn-download-main:hover {
    border-color: #0071e3;
    background: #f4f8ff;
    color: #0071e3;
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-md);
}

.btn-download-main .format-name {
    font-weight: 700;
    font-size: 1rem;
}

.btn-download-main .format-desc {
    font-size: 0.75rem;
    opacity: 0.7;
}

/* New Upload Button moved to end of file */

/* ===== Responsive ===== */
@media (max-width: 600px) {
    .main-content.centered-layout {
        padding: 1rem;
    }

    .upload-card-large {
        padding: 1.25rem;
    }

    .language-selector {
        flex-direction: column;
        align-items: flex-start;
    }

    .source-lang-select {
        max-width: 100%;
        width: 100%;
    }

    .upload-zone-large {
        padding: 2rem 1rem;
    }

    .download-buttons-row {
        grid-template-columns: 1fr;
    }

    .translate-controls-row {
        flex-direction: column;
    }
}

/* Language Settings Modal */
.language-modal {
    max-width: 480px;
    width: 90%;
}

.language-modal .file-info-box {
    margin-bottom: 1.5rem;
}

.language-modal .language-settings {
    margin-bottom: 0;
}

.language-modal .modal-footer {
    padding-top: 1.5rem;
}

.language-modal .btn-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* ===== Single Page Layout ===== */
.single-page-layout {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.main-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 2rem;
    border: 1px solid var(--color-border);
}

.upload-zone-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
}

.upload-zone-main:hover {
    border-color: var(--color-accent-primary);
    background: rgba(0, 113, 227, 0.08); /* 颜色加深 */
    box-shadow: inset 0 0 12px rgba(0, 113, 227, 0.05);
}

.upload-zone-main.drag-over {
    border-color: var(--color-accent-primary);
    background: rgba(0, 113, 227, 0.05);
}

/* Language Settings Section */
.language-settings-section {
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
    margin-top: 1.5rem;
}

.file-info-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: #F0F7FF;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    color: var(--color-text-primary);
}

.file-info-bar svg {
    color: var(--color-accent-primary);
    flex-shrink: 0;
}

.file-info-bar span {
    flex: 1;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--color-accent-primary);
    font-size: 0.875rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
}

.btn-text:hover {
    text-decoration: underline;
}

.language-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.language-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.language-item label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.btn-full {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Processing Inline */
.processing-inline {
    padding: 2rem;
    text-align: center;
}

.processing-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.processing-spinner-small {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Results Inline */
.results-inline {
    padding-top: 1rem;
}

.audio-section {
    margin-bottom: 1.5rem;
}

.audio-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.audio-player-full {
    width: 100%;
    border-radius: var(--radius-sm);
}

.download-section {
    background: #FAFAFA;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.download-section h4 {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.download-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.btn-download {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 600;
    color: var(--color-text-primary);
}

.btn-download:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    background: rgba(0, 113, 227, 0.02);
}

.format-name {
    font-size: 0.875rem;
}

/* New Upload Section moved to end of file */

.upload-zone-small {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.upload-zone-small:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

/* Instructions Card */
.instructions-card {
    margin-top: 1.5rem;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.02);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.instructions-card p {
    margin: 0 0 0.5rem;
}

.instructions-card ol {
    margin: 0;
    padding-left: 1.25rem;
}

.instructions-card li {
    margin-bottom: 0.25rem;
    line-height: 1.5;
}

/* Responsive */
@media (max-width: 480px) {
    .language-row {
        grid-template-columns: 1fr;
    }

    .download-buttons {
        grid-template-columns: 1fr;
    }
}

/* ===== Persistent Upload Card ===== */
.upload-card-persistent {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 2rem;
    border: 1px solid var(--color-border);
    margin-bottom: 1.5rem;
}

.file-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #F8FAFC;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.file-icon {
    color: var(--color-accent-primary);
    flex-shrink: 0;
}

.file-details {
    flex: 1;
    min-width: 0;
}

.file-name {
    margin: 0;
    font-weight: 600;
    color: var(--color-text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-meta {
    margin: 0.25rem 0 0;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.file-status {
    margin: 0.5rem 0 0;
    font-size: 0.85rem;
    color: #34C759;
    font-weight: 500;
}

.file-icon-success {
    color: #34C759;
}

.btn-icon {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.5rem;
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

/* Processing Bar */
.processing-bar {
    margin-top: 1rem;
    padding: 1rem;
    background: #F0F7FF;
    border-radius: var(--radius-sm);
}

.processing-bar-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* Results Card */
.results-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    margin-bottom: 1.5rem;
}

/* Language Modal Popup */
.language-modal-popup {
    max-width: 400px;
    width: 90%;
}

.lang-option {
    margin-bottom: 1.25rem;
}

.lang-option label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.target-lang-highlight {
    background: linear-gradient(135deg, #FFF7E6 0%, #FFFBEB 100%);
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 2px solid #F59E0B;
    margin-left: -1rem;
    margin-right: -1rem;
    padding-left: 1rem;
    padding-right: 1rem;
}

.target-lang-highlight label {
    color: #B45309;
    font-weight: 600;
    font-size: 0.9rem;
}

.select-highlight {
    border-color: #F59E0B;
    background: white;
}

.btn-start {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.875rem;
}

/* ===== Page Tagline ===== */
.page-tagline {
    text-align: center;
    font-size: 0.95rem;
    color: #86868B;
    margin: 0 0 1.5rem;
    letter-spacing: 0.5px;
}

/* ===== Results Card (统一风格) ===== */
.results-card-dark {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
}

.results-card-dark .audio-header {
    color: var(--color-text-secondary);
}

.results-card-dark .audio-section {
    background: #F8FAFC;
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    border: 1px solid var(--color-border);
}

/* ===== Download Section Large ===== */
.download-section-large {
    background: #F8F9FA;
    /* Light Gray Background */
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    border: 1px solid #E9ECEF;
    box-shadow: none;
    color: var(--color-text-primary);
    /* Dark text for light bg */
}

.download-section-large h4 {
    margin: 0 0 1.5rem;
    font-size: 1.1rem;
    color: var(--color-text-primary);
    /* Dark Title */
    font-weight: 700;
    text-align: center;
}

.download-buttons-large {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.btn-download-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 1rem;
    background: #FFFFFF;
    /* White button on gray card */
    border: 2px solid #E0E0E0;
    /* Thicker distinct border */
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    color: var(--color-text-primary);
    /* Dark text */
}



.btn-download-large:hover {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    color: white;
}

.btn-download-large[data-action="modal"]:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-md);
}

.btn-download-large .format-icon {
    font-size: 1.5rem;
}

.btn-download-large .format-name {
    font-size: 1rem;
    font-weight: 700;
}

.btn-download-large .format-desc {
    font-size: 0.75rem;
    opacity: 0.7;
}

/* Global Hidden Utility */
.hidden {
    display: none !important;
}

/* ===== New Upload Button ===== */
.new-upload-section {
    padding-top: 1rem;
}

.btn-new-upload {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 1.25rem;
    background: transparent;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.1rem;
    font-weight: 500;
}

.btn-new-upload:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    background: rgba(0, 113, 227, 0.02);
}

/* ===== Language Modal V2 ===== */
.language-modal-v2 {
    max-width: 480px;
    width: 92%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-header-v2 {
    background: #E5E7EB;
    padding: 1.25rem 1.5rem;
    color: #1F2937;
    border-bottom: 1px solid #D1D5DB;
}

.modal-header-v2 h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-body-v2 {
    padding: 2rem 1.5rem;
    background: #F3F4F6;
}

.lang-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.lang-box {
    flex: 1;
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
}

.lang-box label {
    display: block;
    font-size: 0.8rem;
    color: #64748B;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.lang-box-target {
    background: linear-gradient(135deg, #0071e3 0%, #0068d4 100%);
    border-color: #0077ed;
}

.lang-box-target label {
    color: #e2e8f0;
    /* Light Gray/Blue */
    font-weight: 600;
}

.select-lang {
    width: 100%;
    padding: 0.625rem;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
}

.select-target {
    border-color: #0071e3;
    background: white;
}

.lang-arrow {
    color: #94A3B8;
    flex-shrink: 0;
}

.modal-footer-v2 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: #F8FAFC;
    border-top: 1px solid #E2E8F0;
}

.footer-left {
    display: flex;
    align-items: center;
}

.btn-text-close {
    background: #F1F5F9;
    border: 1px solid #E2E8F0;
    color: #475569;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.btn-text-close:hover {
    background: #E2E8F0;
    border-color: #CBD5E1;
    color: #1E293B;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.btn-start-v2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    background: var(--color-accent-primary);
    border: none;
    color: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-start-v2:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

/* ===== Inline New Upload Button ===== */
.new-upload-inline {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.btn-new-upload-inline {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: transparent;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
}

.btn-new-upload-inline:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    background: rgba(0, 113, 227, 0.02);
}

/* Responsive */
@media (max-width: 480px) {
    .download-buttons-large {
        grid-template-columns: 1fr;
    }

    .lang-flow {
        flex-direction: column;
    }

    .lang-arrow {
        transform: rotate(90deg);
    }

    .lang-box {
        width: 100%;
    }
}

/* ===== 4阶段分段进度条样式 ===== */
.stage-progress {
    margin-top: 0.75rem;
}

.stage-progress-bar {
    display: flex;
    gap: 4px;
    height: 8px;
    margin-bottom: 0.5rem;
}

.stage-segment {
    flex: 1;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.stage-segment .stage-fill {
    width: 0%;
    height: 100%;
    background: var(--color-accent-gradient);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* 激活状态 - 进度动画 */
.stage-segment.active .stage-fill {
    width: 100%;
    animation: stagePulse 1.5s ease-in-out infinite;
}

/* 完成状态 */
.stage-segment.completed .stage-fill {
    width: 100%;
    background: var(--color-success);
    animation: none;
}

/* 错误状态 */
.stage-segment.error .stage-fill {
    width: 100%;
    background: var(--color-error);
    animation: none;
}

@keyframes stagePulse {

    0%,
    100% {
        opacity: 0.7;
    }

    50% {
        opacity: 1;
    }
}

/* 阶段标签 */
.stage-labels {
    display: flex;
    justify-content: space-between;
}

.stage-label {
    flex: 1;
    text-align: center;
    font-size: 0.7rem;
    color: var(--color-text-tertiary);
    transition: all 0.3s ease;
}

.stage-label.active {
    color: var(--color-accent-primary);
    font-weight: 600;
}

.stage-label.completed {
    color: var(--color-success);
}

.stage-label.error {
    color: var(--color-error);
}

/* ===== 操作流程卡片样式 ===== */
.workflow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.workflow-step {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.workflow-step:hover {
    border-color: var(--color-accent-primary);
}

.step-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #9ca3af;
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.step-content {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.step-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text-primary);
}

.step-desc {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

.workflow-arrow {
    color: #9ca3af;
    font-size: 1.25rem;
    font-weight: 300;
    opacity: 0.6;
}

/* 操作流程小型化指示器 */
.workflow-steps-sm {
    background: transparent;
    box-shadow: none;
    padding: 0;
    margin-top: -0.5rem;
    margin-bottom: 2rem;
    gap: 0.4rem;
}

.workflow-steps-sm .workflow-step {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-full);
    gap: 0.5rem;
}

.workflow-steps-sm .step-icon {
    width: 22px;
    height: 22px;
    font-size: 0.75rem;
    background: var(--color-text-tertiary);
}

.workflow-steps-sm .step-title {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.workflow-steps-sm .step-desc {
    display: none;
}

.workflow-steps-sm .workflow-arrow {
    font-size: 1rem;
    opacity: 0.4;
}

@media (max-width: 680px) {
    .workflow-steps {
        flex-direction: column;
        gap: 0.75rem;
        padding: 1rem;
    }

    .workflow-arrow {
        transform: rotate(90deg);
        font-size: 1rem;
    }

    .workflow-step {
        width: 100%;
        justify-content: center;
    }
}

/* ===== 用户认证样式 ===== */

/* 头部用户区域 */
.header-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.auth-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-auth {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-auth:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    transform: translateY(-3px) scale(1.05);
}

.btn-auth-primary {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border: none;
    background: var(--color-accent-primary);
    color: white;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-auth-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-3px) scale(1.05);
}

/* 用户菜单 */
.user-menu {
    position: relative;
}

.btn-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--color-border);
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-user:hover {
    background: var(--color-bg-tertiary);
    transform: translateY(-2px) scale(1.03);
}

.user-avatar {
    font-size: 1rem;
}

.user-email {
    font-size: 0.85rem;
    color: var(--color-text-primary);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    min-width: 150px;
    display: none;
    z-index: 100;
}

.user-dropdown.active {
    display: block;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    text-align: left;
    font-size: 0.85rem;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: background 0.2s ease;
}

.dropdown-item:hover {
    background: var(--color-bg-tertiary);
    transform: translateX(4px) scale(1.02);
}

.dropdown-item:first-child {
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.dropdown-item:last-child {
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

/* 弹窗样式 */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    font-size: 1.5rem;
    color: var(--color-text-tertiary);
    cursor: pointer;
    transition: color 0.2s ease;
}

.modal-close:hover {
    color: var(--color-text-primary);
}

/* 登录弹窗 */
.auth-modal {
    width: 380px;
    padding: 3rem 2.5rem;
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.15);
    border: none;
    position: relative;
    overflow: hidden;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1d1d1f;
    text-align: center;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-group input {
    padding: 0.8rem 1rem;
    border: 1px solid #d2d2d7;
    border-radius: 12px;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    background: #f5f5f7;
    color: #1d1d1f;
}

.form-group input:focus {
    outline: none;
    border-color: #0071e3;
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15);
}

.code-input-group {
    display: flex;
    gap: 0.5rem;
}

.code-input-group input {
    flex: 1;
}

.btn-send-code {
    flex-shrink: 0;
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    white-space: nowrap;
}

.btn-submit {
    display: block;
    width: 100%;
    max-width: 200px;
    margin: 1.5rem auto 0;
    padding: 0.8rem 2rem;
    background: #0071e3;
    color: white;
    border: none;
    border-radius: 980px;
    /* Apple pill shape */
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: none;
}

.btn-submit:hover {
    background: #0077ED;
    transform: scale(1.02);
}

.btn-submit:active {
    transform: scale(0.98);
}

.auth-footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.9rem;
    color: #86868b;
}

.auth-link {
    color: #0071e3;
    text-decoration: none;
    font-weight: 500;
    margin-left: 0.5rem;
    transition: color 0.2s ease;
}

.auth-link:hover {
    color: #0077ED;
    text-decoration: underline;
}

/* 验证码样式 */
.captcha-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.captcha-display {
    flex: 1;
    padding: 0.75rem 1rem;
    background: #f0f4f8;
    border: 2px dashed #d1d5db;
    border-radius: var(--radius-sm);
    font-size: 1.5rem;
    font-weight: 800;
    font-family: 'Courier New', monospace;
    text-align: center;
    letter-spacing: 8px;
    color: #1e293b;
    user-select: none;
    -webkit-user-select: none;
}

.btn-refresh-captcha {
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border);
    background: transparent;
    border-radius: var(--radius-sm);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-refresh-captcha:hover {
    border-color: var(--color-accent-primary);
    transform: rotate(180deg);
}

.register-bonus {
    text-align: center;
    font-size: 0.85rem;
    color: #10b981;
    font-weight: 500;
    margin-top: 0.75rem;
    padding: 0.5rem;
    background: rgba(16, 185, 129, 0.08);
    border-radius: var(--radius-sm);
}

/* ===== 注册成功弹窗 ===== */
.success-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.success-modal-overlay.active {
    display: flex;
    opacity: 1;
}

.success-modal {
    background: white;
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    max-width: 380px;
    width: 90%;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
    animation: successModalIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

@keyframes successModalIn {
    from {
        opacity: 0;
        transform: scale(0.7) translateY(30px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.success-modal-confetti {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    font-size: 1.5rem;
    pointer-events: none;
}

.success-modal-confetti span {
    animation: confettiFall 2s ease-in-out infinite;
    opacity: 0;
}

.success-modal-confetti span:nth-child(1) {
    animation-delay: 0s;
}

.success-modal-confetti span:nth-child(2) {
    animation-delay: 0.2s;
}

.success-modal-confetti span:nth-child(3) {
    animation-delay: 0.4s;
}

.success-modal-confetti span:nth-child(4) {
    animation-delay: 0.6s;
}

.success-modal-confetti span:nth-child(5) {
    animation-delay: 0.8s;
}

@keyframes confettiFall {
    0% {
        transform: translateY(-20px) rotate(0deg);
        opacity: 0;
    }

    20% {
        opacity: 1;
    }

    100% {
        transform: translateY(60px) rotate(360deg);
        opacity: 0;
    }
}

.success-modal-icon {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    animation: iconPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s both;
}

@keyframes iconPop {
    from {
        transform: scale(0);
    }

    to {
        transform: scale(1);
    }
}

.success-modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.success-modal-message {
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 1.25rem;
}

.success-modal-discount {
    background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
    border: 1px solid #bbf7d0;
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.discount-badge {
    display: inline-block;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.discount-detail {
    font-size: 0.95rem;
    color: #374151;
    margin: 0.5rem 0 0;
}

.discount-rate {
    color: #dc2626;
    font-size: 1.1em;
}

.success-modal-btn {
    width: 100%;
    padding: 0.85rem;
    background: linear-gradient(135deg, var(--color-accent-primary), #2563eb);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.success-modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

/* 历史记录弹窗 */
.history-modal {
    width: 500px;
}

.history-modal h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.history-notice {
    font-size: 0.85rem;
    color: var(--color-warning);
    background: rgba(255, 193, 7, 0.1);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.history-list {
    max-height: 400px;
    overflow-y: auto;
}

.history-empty,
.loading-history,
.history-error {
    text-align: center;
    color: var(--color-text-tertiary);
    padding: 2rem;
}

.history-error {
    color: var(--color-error);
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

.history-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.history-filename {
    font-weight: 500;
    color: var(--color-text-primary);
}

.history-meta {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

.history-actions {
    display: flex;
    gap: 0.5rem;
}

.history-actions .btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

/* ===== 统一进度条样式 ===== */
.unified-progress-container {
    width: 100%;
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.unified-progress-track {
    width: 100%;
    height: 12px;
    background-color: var(--color-bg-secondary);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--color-border);
}

.unified-progress-fill {
    height: 100%;
    background: var(--color-accent-gradient);
    border-radius: 999px;
    transition: width 0.3s ease-out;
    width: 0%;
}

.unified-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.unified-progress-status {
    color: var(--color-text-primary);
}

.unified-progress-percent {
    color: var(--color-accent-primary);
    font-weight: 700;
}

/* ===== 浏览器推荐提示 ===== */
.browser-tip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    margin: 0.5rem auto 1.5rem;
    max-width: 500px;
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 0.75rem;
    color: #666666;
}

.browser-tip .tip-icon {
    font-size: 0.9rem;
}

.browser-tip strong {
    color: #0071e3;
    font-weight: 500;
}

/* ===== 页脚 ===== */
.site-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 1rem;
    margin-top: 2rem;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-visit {
    color: rgba(255, 255, 255, 0.9);
}

.footer-visit #visitCount {
    font-weight: 600;
    color: #fff;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
}



/* ===== 浮动价格窗口 ===== */
.pricing-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    padding: 1rem 1.25rem;
    min-width: 180px;
    z-index: 50;
    text-align: center;
    border: 1px solid #e0e0e0;
}

.pricing-float-header {
    font-size: 0.7rem;
    color: #999999;
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-float-price {
    font-size: 1.4rem;
    font-weight: 700;
    color: #0071e3;
    margin-bottom: 0.6rem;
}

.pricing-float-trial {
    font-size: 0.7rem;
    color: #28a745;
    line-height: 1.5;
    font-weight: 500;
}

.pricing-float-trial .trial-note {
    color: #999999;
    font-size: 0.65rem;
    font-weight: 400;
}

.pricing-float-contact {
    margin-top: 0.8rem;
    padding-top: 0.6rem;
    border-top: 1px dashed rgba(0, 0, 0, 0.05);
    font-size: 0.75rem;
    color: #666;
    font-weight: 500;
}

/* Hidden state for pricing widget */
.pricing-float.hidden {
    display: none;
}

/* ===== Mobile Responsive Styles ===== */
@media (max-width: 768px) {
    .header-content {
        padding: 0 1rem;
    }

    .site-tagline {
        display: none;
    }

    .logo-separator {
        display: none;
    }

    .workflow-steps {
        gap: 0.25rem;
        padding: 0.75rem 0.5rem;
    }

    .workflow-step {
        padding: 0.5rem;
        gap: 0.4rem;
        flex: 1;
        justify-content: center;
    }

    .step-icon {
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }

    .step-title {
        font-size: 0.75rem;
    }

    .step-desc {
        display: none;
    }

    .workflow-arrow {
        transform: rotate(0deg);
        font-size: 1rem;
        padding: 0 0.1rem;
    }

    .main-content {
        padding: 1rem;
    }

    .card {
        margin: 0;
    }

    .upload-zone {
        padding: 1.5rem;
    }

    .pricing-float {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        min-width: auto;
    }

    .site-footer {
        flex-direction: column;
        gap: 0.5rem;
    }

    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 1.2rem;
    }

    .workflow-step {
        padding: 0.5rem;
    }

    .step-title {
        font-size: 0.85rem;
    }

    .step-desc {
        font-size: 0.7rem;
    }
}