/* ==================== 
   ShotForm - 极简主义风格
   Apple-style aesthetic
   ==================== */

:root {
    --color-primary: #007AFF;
    --color-primary-dark: #0056b3;
    --color-success: #34C759;
    --color-warning: #FF9500;
    --color-danger: #FF3B30;
    
    --color-bg: #FAFAFA;
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 无障碍缩放变量 */
    --font-scale: 1;
    --zoom-scale: 1;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: calc(16px * var(--font-scale));
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ==================== Page System ==================== */

.page {
    display: none;
    min-height: 100vh;
}
.page.active {
    display: block;
    animation: pageEnter 0.5s ease both;
}
.page.leaving {
    display: block;
    animation: pageLeave 0.4s ease both;
    pointer-events: none;
}

@keyframes pageEnter {
    from {
        opacity: 0;
        filter: blur(8px);
        transform: scale(0.98);
    }
    to {
        opacity: 1;
        filter: blur(0);
        transform: scale(1);
    }
}
@keyframes pageLeave {
    from {
        opacity: 1;
        filter: blur(0);
        transform: scale(1);
    }
    to {
        opacity: 0;
        filter: blur(12px);
        transform: scale(1.02);
    }
}

/* Transition overlay */
.page-transition {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--color-white);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.page-transition.active {
    opacity: 1;
    pointer-events: all;
    backdrop-filter: blur(20px);
}

/* Nav ghost button (back) */
.btn-nav-ghost {
    background: none;
    border: 1px solid var(--color-gray-200);
    color: var(--color-gray-600);
    padding: 8px 18px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}
.btn-nav-ghost:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
    color: var(--color-gray-900);
}

/* ==================== Result Page (standalone) ==================== */

.result-page {
    min-height: 100vh;
    padding: 80px 32px 48px;
    background: var(--color-gray-50);
    display: flex;
    align-items: flex-start;
    justify-content: center;
}
.result-page .result-split {
    max-width: 1120px;
    width: 100%;
}

/* ==================== Navigation ==================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-gray-100);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 20px;
}

.logo-icon {
    font-size: 24px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-gray-600);
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--color-gray-900);
}

.btn-nav {
    background: var(--color-gray-900) !important;
    color: var(--color-white) !important;
    padding: 10px 20px !important;
    border-radius: var(--radius-md) !important;
}

.btn-nav:hover {
    background: var(--color-gray-700) !important;
}

/* ==================== Hero ==================== */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 80px 24px 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-full {
    justify-content: center;
    gap: 0;
}

.hero-main {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    padding: 24px 0 40px;
}

.hero-content {
    flex: 1;
    max-width: 480px;
}

.hero-title {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, #5856D6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 16px;
    color: var(--color-gray-500);
    margin-bottom: 32px;
    line-height: 1.6;
}

/* Hero 底部信息栏 */
.hero-footer {
    border-top: 1px solid var(--color-gray-100);
    padding-top: 40px;
    padding-bottom: 24px;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.info-col h3 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-gray-400);
    margin-bottom: 16px;
}

.info-items {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}

.info-items span {
    font-size: 15px;
    color: var(--color-gray-600);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: 16px 32px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--color-gray-700);
    transform: translateY(-2px);
}

.btn-primary:disabled {
    background: var(--color-gray-300);
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-white);
    color: var(--color-gray-700);
    padding: 16px 32px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    border: 1px solid var(--color-gray-200);
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
}

.btn-arrow {
    transition: var(--transition);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(4px);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: 24px;
    box-shadow: var(--shadow-xl);
    width: 320px;
}

.skeleton-video {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.demo-video {
    width: 100%;
    height: 200px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
}

.demo-gif {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.skeleton-score {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.skeleton-score span {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-success);
    transition: color 0.4s ease;
    font-variant-numeric: tabular-nums;
}

.skeleton-score small {
    font-size: 18px;
    color: var(--color-gray-500);
}

.skeleton-grade {
    text-align: center;
    margin-top: 4px;
    padding: 3px 14px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    background: var(--color-success);
    border-radius: 12px;
    display: inline-block;
    transition: background 0.4s ease;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.card-preview {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ==================== Analyze Section ==================== */

.analyze-section {
    padding: 60px 24px 60px;
    background: var(--color-gray-50);
}

.analyze-fullpage {
    min-height: 100vh;
    padding: 80px 24px 40px;
    display: flex;
    align-items: flex-start;
}

.analyze-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    width: 100%;
}

.analyze-container.compact {
    max-width: 640px;
}

/* Result step — now a standalone page, no longer in analyze-container */

.analyze-step {
    display: none;
}

.analyze-step.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.step-header {
    text-align: center;
    margin-bottom: 48px;
}

.step-header.compact {
    margin-bottom: 24px;
}

.step-header.compact h2 {
    font-size: 24px;
    margin-bottom: 0;
}

.step-indicator {
    display: inline-block;
    background: var(--color-gray-100);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    color: var(--color-gray-500);
    margin-bottom: 16px;
}

.step-indicator .current {
    color: var(--color-gray-900);
    font-weight: 600;
}

.step-header h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-header p {
    color: var(--color-gray-500);
}

/* Action Type Selection */

.action-type-selection {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.action-type-selection.compact {
    gap: 12px;
    margin-bottom: 20px;
}

.action-type-card {
    position: relative;
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: 24px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    gap: 16px;
    align-items: center;
}

.action-type-selection.compact .action-type-card {
    padding: 16px 20px;
    gap: 12px;
}

.action-type-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-sm);
}

.action-type-card.selected {
    border-color: var(--color-primary);
    background: rgba(0, 122, 255, 0.02);
}

.action-type-icon {
    width: 48px;
    height: 48px;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.action-type-card.selected .action-type-icon {
    background: var(--color-primary);
    color: white;
}

.action-type-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 0;
    color: var(--color-gray-900);
}

.action-type-en {
    font-size: 12px;
    color: var(--color-gray-400);
    display: block;
}

.action-type-info p {
    font-size: 14px;
    color: var(--color-gray-500);
    line-height: 1.5;
    margin: 0;
}

.action-type-check {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    opacity: 0;
    transform: scale(0.8);
    transition: var(--transition);
}

.action-type-card.selected .action-type-check {
    opacity: 1;
    transform: scale(1);
}

/* Upload Section */

.upload-section {
    margin-bottom: 16px;
}

.upload-section.compact {
    margin-bottom: 20px;
}

.upload-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 12px;
}

.upload-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-700);
}

.upload-subtitle {
    font-size: 12px;
    color: var(--color-gray-400);
}

.upload-area {
    border: 2px dashed var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: 48px 24px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.upload-area.compact {
    padding: 32px 24px;
}

.upload-area:hover {
    border-color: var(--color-primary);
    background: var(--color-gray-50);
}

.upload-area.dragover {
    border-color: var(--color-primary);
    background: rgba(0, 122, 255, 0.05);
}

.upload-icon {
    color: var(--color-gray-400);
    margin-bottom: 12px;
}

.upload-text {
    color: var(--color-gray-500);
}

.upload-link {
    color: var(--color-primary);
    cursor: pointer;
}

/* ===== Camera Recording ===== */
.camera-section {
    margin-top: 12px;
}
.camera-trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border: 2px dashed var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-gray-500);
    font-size: 14px;
    font-weight: 500;
}
.camera-trigger:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(0,122,255,0.02);
}
.camera-countdown-opts {
    margin-left: auto;
    display: flex;
    gap: 4px;
}
.cd-btn {
    padding: 3px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid var(--color-gray-200);
    background: var(--color-white);
    color: var(--color-gray-500);
    cursor: pointer;
    transition: var(--transition);
}
.cd-btn:hover { border-color: var(--color-gray-300); }
.cd-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.camera-panel {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #000;
    margin-top: 12px;
}
.camera-panel video {
    width: 100%;
    display: block;
    max-height: 360px;
    object-fit: cover;
}
.camera-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}
.cam-countdown-big {
    font-size: 80px;
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    text-shadow: 0 4px 24px rgba(0,0,0,0.4);
    opacity: 0;
    transform: scale(1.5);
    transition: all 0.3s ease;
}
.cam-countdown-big.show {
    opacity: 1;
    transform: scale(1);
}

.camera-timer {
    position: absolute;
    top: 12px;
    left: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(0,0,0,0.6);
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    opacity: 0;
    transition: opacity 0.3s;
}
.camera-timer.visible { opacity: 1; }
.rec-dot {
    width: 8px;
    height: 8px;
    background: #FF3B30;
    border-radius: 50%;
    animation: recBlink 1s ease infinite;
}
@keyframes recBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}
#rec-limit { color: rgba(255,255,255,0.5); font-weight: 400; }

.camera-controls {
    display: flex;
    gap: 8px;
    padding: 12px;
    background: rgba(0,0,0,0.4);
}
.camera-controls .glass-btn {
    flex: 1;
    justify-content: center;
    color: #fff;
    border-color: rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
}
.camera-controls .glass-btn:hover {
    background: rgba(255,255,255,0.2);
}
.camera-controls .glass-btn.primary {
    background: rgba(255,59,48,0.8);
    border-color: rgba(255,59,48,0.6);
}
.camera-controls .glass-btn.primary:hover {
    background: rgba(255,59,48,0.95);
}
.camera-controls .glass-btn.recording {
    background: rgba(255,59,48,0.9);
    animation: recPulse 1.5s ease infinite;
}
@keyframes recPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255,59,48,0.4); }
    50% { box-shadow: 0 0 0 8px rgba(255,59,48,0); }
}

.video-preview {
    text-align: center;
}

.video-preview video {
    width: 100%;
    max-height: 400px;
    border-radius: var(--radius-lg);
    background: var(--color-gray-900);
    margin-bottom: 16px;
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 48px;
}

.action-buttons.compact {
    margin-top: 24px;
}

.btn-sm {
    padding: 8px 16px !important;
    font-size: 13px !important;
}

/* Keyframe */

.keyframe-container {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.keyframe-video {
    position: relative;
    margin-bottom: 24px;
}

.keyframe-video video {
    width: 100%;
    border-radius: var(--radius-md);
    background: var(--color-gray-900);
}

.frame-info {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
}

.keyframe-timeline {
    position: relative;
    margin-bottom: 32px;
}

.keyframe-timeline input[type="range"] {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    background: var(--color-gray-200);
    border-radius: 4px;
    outline: none;
}

.keyframe-timeline input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--color-gray-900);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.keyframe-timeline input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.keyframe-markers {
    position: absolute;
    top: 16px;
    left: 0;
    right: 0;
    height: 20px;
    pointer-events: none;
}

.keyframe-marker {
    position: absolute;
    width: 3px;
    height: 12px;
    background: var(--color-primary);
    border-radius: 2px;
    transform: translateX(-50%);
}

.keyframe-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.keyframe-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-white);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.keyframe-item:hover {
    border-color: var(--color-gray-300);
}

.keyframe-item.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.keyframe-item.set {
    border-color: var(--color-success);
}

.keyframe-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.keyframe-icon {
    width: 36px;
    height: 36px;
    background: var(--color-gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.keyframe-item.set .keyframe-icon {
    background: var(--color-success);
    color: white;
}

.keyframe-name {
    font-weight: 500;
}

.keyframe-desc {
    font-size: 13px;
    color: var(--color-gray-500);
}

.keyframe-value {
    font-weight: 600;
    color: var(--color-gray-400);
}

.keyframe-item.set .keyframe-value {
    color: var(--color-success);
}

.keyframe-btn {
    padding: 8px 16px;
    background: var(--color-gray-100);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.keyframe-btn:hover {
    background: var(--color-gray-200);
}

/* Result — new layout */

/* ===== Glass morphism buttons ===== */
.glass-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-700);
    background: rgba(255,255,255,0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.45);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06), inset 0 1px 0 rgba(255,255,255,0.6);
}
.glass-btn:hover {
    background: rgba(255,255,255,0.75);
    box-shadow: 0 4px 16px rgba(0,0,0,0.1), inset 0 1px 0 rgba(255,255,255,0.8);
    transform: translateY(-1px);
}
.glass-btn.primary {
    background: rgba(0,122,255,0.15);
    color: var(--color-primary);
    border-color: rgba(0,122,255,0.25);
}
.glass-btn.primary:hover {
    background: rgba(0,122,255,0.25);
}

/* ===== Left-right split ===== */
.result-split {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

/* ----- Left column: scores ----- */
.result-left {
    width: 240px;
    flex-shrink: 0;
    position: sticky;
    top: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 28px 20px;
    background: rgba(255,255,255,0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.55);
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

/* Score ring — centered */
.result-score-ring {
    position: relative;
    width: 120px;
    height: 120px;
    flex-shrink: 0;
}

/* Sub-scores — vertical list */
.left-sub-scores {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.score-pill-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
}
.score-pill-row .pill-icon { font-size: 14px; flex-shrink: 0; }
.score-pill-row .pill-label {
    font-size: 13px;
    color: var(--color-gray-500);
    font-weight: 500;
    width: 36px;
    flex-shrink: 0;
}
.score-pill-row .pill-bar {
    flex: 1;
    height: 6px;
    background: var(--color-gray-200);
    border-radius: 3px;
    overflow: hidden;
}
.score-pill-row .pill-bar-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--color-primary);
    width: 0%;
    transition: width 0.8s ease;
}
.score-pill-row .pill-value {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-gray-900);
    width: 28px;
    text-align: right;
    flex-shrink: 0;
}
.score-ring-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}
.ring-bg {
    fill: none;
    stroke: var(--color-gray-100);
    stroke-width: 8;
}
.ring-fill {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s ease, stroke 0.5s ease;
}
.score-ring-inner {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.score-ring-inner .score-value {
    font-size: 34px;
    font-weight: 700;
    line-height: 1;
    color: var(--color-gray-900);
}
.score-ring-inner .score-grade {
    display: inline-block;
    margin-top: 4px;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    color: #fff;
    background: var(--color-success);
    border-radius: 10px;
}

/* (score-pill cards removed — now using score-pill-row) */

/* Summary */
.result-summary {
    text-align: center;
    font-size: 13px;
    color: var(--color-gray-500);
    line-height: 1.5;
    padding: 0 4px;
}

/* Action buttons */
.result-actions {
    display: flex;
    gap: 8px;
}
.result-actions .glass-btn {
    flex: 1;
    justify-content: center;
    padding: 8px 0;
    font-size: 13px;
}

/* ----- Right column: tabs + content ----- */
.result-right {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: 20px;
    background: rgba(255,255,255,0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.55);
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

/* Tab bar */
.result-tabs-bar {
    display: flex;
    gap: 6px;
    padding: 4px;
    background: rgba(0,0,0,0.03);
    border-radius: 14px;
    margin-bottom: 16px;
    position: sticky;
    top: 0;
    z-index: 20;
}
.tab-btn {
    flex: 1;
    text-align: center;
    padding: 10px 0;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-400);
    background: transparent;
    border: 1.5px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s ease;
}
.tab-btn:hover {
    color: var(--color-gray-600);
    background: rgba(255,255,255,0.4);
}
.tab-btn.active {
    color: var(--color-primary);
    font-weight: 600;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(12px);
    border-color: rgba(0,122,255,0.2);
    box-shadow: 0 2px 8px rgba(0,122,255,0.1), inset 0 1px 0 rgba(255,255,255,0.7);
    transform: scale(1.03);
}

/* Panels */
.result-panels { flex: 1; }
.result-tab-panel {
    display: none;
    animation: fadeIn 0.25s ease;
}
.result-tab-panel.active { display: block; }

/* ===== Suggestion groups (accordion) ===== */
.suggestion-groups {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.sg-group {
    border-radius: 14px;
    overflow: hidden;
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.45);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.sg-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s;
}
.sg-header:hover { background: rgba(0,0,0,0.02); }
.sg-icon { font-size: 18px; }
.sg-title {
    flex: 1;
    font-weight: 600;
    font-size: 15px;
    color: var(--color-gray-800);
}
.sg-badge {
    padding: 2px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 10px;
    color: #fff;
}
.sg-badge.good { background: var(--color-success); }
.sg-badge.ok   { background: var(--color-warning); }
.sg-badge.bad  { background: var(--color-danger); }
.sg-chevron {
    width: 20px;
    height: 20px;
    color: var(--color-gray-400);
    transition: transform 0.25s ease;
}
.sg-group.open .sg-chevron { transform: rotate(180deg); }
.sg-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
.sg-group.open .sg-body { max-height: 600px; }
.sg-body-inner {
    padding: 0 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Issue card */
.sg-issue {
    padding: 12px 14px;
    background: var(--color-gray-50);
    border-radius: 10px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-gray-600);
}
.sg-issue .issue-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}
.sg-issue .issue-row:last-child { margin-bottom: 0; }
.issue-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-gray-400);
    min-width: 48px;
}
.issue-current { color: var(--color-danger); font-weight: 600; }
.issue-arrow   { color: var(--color-gray-300); }
.issue-target  { color: var(--color-success); font-weight: 600; }
.issue-fix {
    padding: 8px 12px;
    background: rgba(0,122,255,0.06);
    border-radius: 8px;
    color: var(--color-gray-700);
    font-size: 13px;
}

/* Success state */
.sg-success {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px;
    background: rgba(52,199,89,0.06);
    border-radius: 14px;
    border: 1px solid rgba(52,199,89,0.15);
    font-size: 14px;
    color: var(--color-gray-700);
}

/* ===== Comparison video tab ===== */
.comparison-player {
    border-radius: 14px;
    overflow: hidden;
    background: var(--color-gray-900);
    margin-bottom: 12px;
}
.comparison-player video { width: 100%; display: block; }
.video-jump-links { display: flex; flex-wrap: wrap; gap: 8px; }
.video-jump-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-600);
    background: rgba(255,255,255,0.55);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.45);
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.video-jump-btn:hover {
    background: rgba(0,122,255,0.1);
    color: var(--color-primary);
    border-color: rgba(0,122,255,0.2);
}

/* Data table tab */
.data-table-wrap { overflow-x: auto; }
.data-table-wrap table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table-wrap th {
    text-align: left;
    padding: 10px 12px;
    background: var(--color-gray-50);
    color: var(--color-gray-500);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.data-table-wrap td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-gray-100);
    color: var(--color-gray-700);
}
.data-table-wrap tr:last-child td { border-bottom: none; }

/* Video error */
.video-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: var(--color-gray-100);
    border-radius: 14px;
    color: var(--color-gray-500);
}
.video-error p { font-size: 16px; margin-bottom: 8px; }
.video-error small { font-size: 13px; }

/* ===== Result action buttons ===== */
.result-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}
.result-actions .glass-btn {
    width: 100%;
    justify-content: center;
    padding: 10px 0;
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Status badges reused from old table */
.status-good { color: var(--color-success); font-weight: 500; }
.status-ok   { color: var(--color-warning); font-weight: 500; }
.status-bad  { color: var(--color-danger);  font-weight: 500; }

/* Responsive — result split */
@media (max-width: 860px) {
    .result-page {
        padding: 80px 16px 32px;
    }
    .result-split {
        flex-direction: column;
        gap: 16px;
    }
    .result-left {
        width: 100%;
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        padding: 20px;
    }
    .left-score-row {
        width: 100%;
        justify-content: center;
    }
    .result-summary { width: 100%; }
    .result-actions { width: 100%; }
    .result-right { padding: 16px; }
}

/* Loading */

.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    z-index: 10;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-gray-900);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.loading-text {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 8px;
}

.loading-sub {
    color: var(--color-gray-500);
    font-size: 14px;
}

/* 按钮内联 loading */
button .loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    vertical-align: middle;
    margin-right: 8px;
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Footer */

.footer {
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: 64px 24px;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-text {
    color: var(--color-gray-400);
    margin-bottom: 24px;
}

.footer-copyright {
    color: var(--color-gray-500);
    font-size: 14px;
}

/* ==================== Responsive ==================== */

@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 100px;
        gap: 48px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .hero-card {
        width: 280px;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step-connector {
        width: 2px;
        height: 40px;
        margin: 0;
    }
    
    .score-pill {
        min-width: 100px;
    }
    
    .nav-links a:not(.btn-nav) {
        display: none;
    }
    
    .action-type-selection {
        grid-template-columns: 1fr;
    }
    
    .action-type-card {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .action-type-check {
        top: 12px;
        right: 12px;
    }
}

/* ==================== AI 关键帧检测样式 ==================== */

.upload-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: var(--radius-md);
    margin-top: 16px;
    font-weight: 500;
}

.status-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.ai-result {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-top: 20px;
}

.ai-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.ai-result-header.manual {
    justify-content: center;
}

.ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.ai-confidence {
    font-size: 14px;
    color: var(--color-gray-600);
    font-weight: 500;
}

.ai-keyframes-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.ai-kf-item {
    text-align: center;
}

.ai-kf-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--color-gray-200);
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--color-gray-500);
}

.ai-kf-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ai-kf-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-gray-800);
}

.ai-kf-frame {
    font-size: 11px;
    color: var(--color-gray-500);
}

.ai-tip {
    font-size: 13px;
    color: var(--color-gray-500);
    text-align: center;
    margin: 0;
    padding: 12px;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
}

/* 对比视频错误状态 */
.video-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    color: var(--color-gray-500);
}

.video-error p {
    font-size: 16px;
    margin-bottom: 8px;
}

.video-error small {
    font-size: 13px;
}

/* AI 分析进度条 */
.ai-progress {
    margin-top: 16px;
}

.ai-progress-bar {
    height: 4px;
    background: var(--color-gray-200);
    border-radius: 2px;
    overflow: hidden;
}

.ai-progress-fill {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
    animation: progress-indeterminate 1.5s ease-in-out infinite;
    width: 30%;
}

@keyframes progress-indeterminate {
    0% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(200%);
    }
    100% {
        transform: translateX(-100%);
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .ai-keyframes-preview {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .ai-result-header {
        flex-direction: column;
        gap: 8px;
    }
}