/* ==========================================================================
   LLMRI - CSS Stylesheet
   Light/Dark mode with Gemini Blue accent
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Light Mode Default)
   -------------------------------------------------------------------------- */
:root {
    /* Colors - Light Mode */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f1f3f4;
    --color-bg-card: #ffffff;
    --color-bg-hover: #e8eaed;
    
    --color-border: #dadce0;
    --color-border-hover: #bdc1c6;
    
    --color-text-primary: #202124;
    --color-text-secondary: #5f6368;
    --color-text-muted: #80868b;
    
    /* Gemini Blue */
    --color-accent: #4285F4;
    --color-accent-hover: #3367d6;
    --color-accent-dim: rgba(66, 133, 244, 0.1);
    --color-accent-glow: rgba(66, 133, 244, 0.2);
    
    /* Semantic Colors */
    --color-success: #34a853;
    --color-success-dim: rgba(52, 168, 83, 0.1);
    --color-warning: #fbbc04;
    --color-warning-dim: rgba(251, 188, 4, 0.1);
    --color-error: #ea4335;
    --color-error-dim: rgba(234, 67, 53, 0.1);
    
    /* Section Colors */
    --color-section-1: #4285F4; /* Experimental Design */
    --color-section-2: #34a853; /* Acquisition */
    --color-section-3: #ea4335; /* Preprocessing */
    --color-section-4: #fbbc04; /* Statistical Modeling */
    --color-section-5: #9334e6; /* Results */
    --color-section-6: #ff6d01; /* Data Sharing */
    --color-section-7: #00acc1; /* Reproducibility */
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
    --font-mono: 'IBM Plex Mono', 'SF Mono', 'Consolas', monospace;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* --------------------------------------------------------------------------
   Dark Mode
   -------------------------------------------------------------------------- */
[data-theme="dark"] {
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #121218;
    --color-bg-tertiary: #1a1a22;
    --color-bg-card: #14141c;
    --color-bg-hover: #1e1e28;
    
    --color-border: #2a2a36;
    --color-border-hover: #3a3a48;
    
    --color-text-primary: #e8eaed;
    --color-text-secondary: #9aa0a6;
    --color-text-muted: #6b7280;
    
    --color-accent-dim: rgba(66, 133, 244, 0.15);
    --color-accent-glow: rgba(66, 133, 244, 0.25);
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* System preference detection */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-bg-primary: #0a0a0f;
        --color-bg-secondary: #121218;
        --color-bg-tertiary: #1a1a22;
        --color-bg-card: #14141c;
        --color-bg-hover: #1e1e28;
        
        --color-border: #2a2a36;
        --color-border-hover: #3a3a48;
        
        --color-text-primary: #e8eaed;
        --color-text-secondary: #9aa0a6;
        --color-text-muted: #6b7280;
        
        --color-accent-dim: rgba(66, 133, 244, 0.15);
        --color-accent-glow: rgba(66, 133, 244, 0.25);
        
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    }
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.3;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-hover);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input {
    font-family: inherit;
}

/* Focus states */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--color-accent-dim);
    color: var(--color-accent);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-hover);
}

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

.main {
    flex: 1;
    max-width: 960px;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
}

[data-theme="dark"] .header,
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .header {
        background: rgba(10, 10, 15, 0.9);
    }
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--color-text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-img {
    width: 32px;
    height: 32px;
}

/* Light/dark logo switching */
.logo-img--dark { display: none; }
.logo-img--light { display: block; }

[data-theme="dark"] .logo-img--dark { display: block; }
[data-theme="dark"] .logo-img--light { display: none; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .logo-img--dark { display: block; }
    :root:not([data-theme="light"]) .logo-img--light { display: none; }
}

.logo-title {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.logo-subtitle {
    display: block;
    font-size: 11px;
    color: var(--color-text-muted);
    letter-spacing: 0.3px;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.nav-link--accent {
    color: var(--color-accent);
    background: var(--color-accent-dim);
    border: 1px solid transparent;
}

.nav-link--accent:hover {
    background: var(--color-accent-glow);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

/* Theme toggle icons */
.icon-sun { display: block; }
.icon-moon { display: none; }
.icon-palette { display: none; }

[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }
[data-theme="dark"] .icon-palette { display: none; }

[data-theme="random"] .icon-sun { display: none; }
[data-theme="random"] .icon-moon { display: none; }
[data-theme="random"] .icon-palette { display: block; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]):not([data-theme="random"]) .icon-sun { display: none; }
    :root:not([data-theme="light"]):not([data-theme="random"]) .icon-moon { display: block; }
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
    text-align: center;
    padding: var(--space-3xl) 0 var(--space-2xl);
}
.hero-content {
    max-width: 680px;
    margin: 0 auto;
}
.badge-container {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: var(--space-lg);
}
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    background: var(--color-accent-dim);
    border: 1px solid var(--color-accent-glow);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 0;  /* Removed - container handles spacing now */
}
.badge--link {
    text-decoration: none;
    transition: all var(--transition-fast);
}
.badge--link:hover {
    background: var(--color-bg-hover);
    transform: translateY(-1px);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: clamp(32px, 5vw, 44px);
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
}

.hero-title--accent {
    display: block;
    background: linear-gradient(135deg, var(--color-accent) 0%, #5e9eff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-mono);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-accent);
}

.stat-label {
    font-size: 12px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* --------------------------------------------------------------------------
   Upload Section
   -------------------------------------------------------------------------- */
.upload-section {
    max-width: 560px;
    margin: 0 auto;
    padding-bottom: var(--space-3xl);
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.upload-zone {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background: var(--color-bg-card);
}

.upload-zone:hover,
.upload-zone.dragging {
    border-color: var(--color-accent);
    background: var(--color-accent-dim);
}

.upload-zone.has-file {
    border-style: solid;
    border-color: var(--color-accent);
}

.upload-input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.upload-text {
    font-size: 15px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.upload-text--accent {
    color: var(--color-accent);
    font-weight: 500;
}

.upload-hint {
    font-size: 13px;
    color: var(--color-text-muted);
}

.file-preview {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--color-accent);
}

.file-info {
    flex: 1;
    text-align: left;
}

.file-name {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-size {
    font-size: 12px;
    color: var(--color-text-muted);
}

.file-remove {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 10;
    position: relative;
}

.file-remove:hover {
    border-color: var(--color-error);
    color: var(--color-error);
    background: var(--color-error-dim);
}

.analyze-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    background: var(--color-accent);
    color: white;
    font-size: 15px;
    font-weight: 600;
    transition: all var(--transition-base);
}

.analyze-button:hover:not(:disabled) {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

/* Enhanced Processing UI Styles */
/* Add these to your style.css */

/* ============================================
   PROCESSING CONTAINER
   ============================================ */
.processing {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    margin-top: 24px;
}

.processing-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.processing-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   MODE BADGE
   ============================================ */
.processing-mode {
    margin-bottom: 20px;
}

.mode-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mode-badge--standard {
    background: rgba(66, 133, 244, 0.1);
    color: #4285F4;
    border: 1px solid rgba(66, 133, 244, 0.3);
}

.mode-badge--high-accuracy {
    background: rgba(156, 39, 176, 0.1);
    color: #9c27b0;
    border: 1px solid rgba(156, 39, 176, 0.3);
}

/* ============================================
   PROGRESS BAR
   ============================================ */
.progress-container {
    margin-bottom: 24px;
}

.progress-bar {
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4285F4, #34a853);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

/* ============================================
   PROCESSING STEPS
   ============================================ */
.processing-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    opacity: 0.5;
    transition: all 0.3s ease;
}

.step.active {
    opacity: 1;
    background: rgba(66, 133, 244, 0.1);
    border: 1px solid rgba(66, 133, 244, 0.3);
}

.step.complete {
    opacity: 1;
}

.step-indicator {
    position: relative;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    transition: all 0.3s ease;
}

.step.active .step-dot {
    background: var(--accent-color);
    animation: pulse 1.5s infinite;
}

.step.complete .step-dot {
    display: none;
}

.step-check {
    display: none;
    color: #34a853;
}

.step.complete .step-check {
    display: block;
}

.step-label {
    font-size: 0.95rem;
    color: var(--text-primary);
    flex: 1;
}

.step-detail {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-left: auto;
}

/* ============================================
   HIGH ACCURACY PANEL
   ============================================ */
.high-accuracy-panel {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

/* Passes Section */
.passes-section {
    margin-bottom: 24px;
}

.passes-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.passes-grid {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.pass-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.pass-item.active {
    border-color: var(--accent-color);
    background: rgba(66, 133, 244, 0.1);
    color: var(--accent-color);
    animation: pulse 1.5s infinite;
}

.pass-item.complete {
    border-color: #34a853;
    background: rgba(52, 168, 83, 0.1);
    color: #34a853;
}

.pass-item.complete::after {
    content: '✓';
    font-size: 1rem;
}

.pass-item.complete span {
    display: none;
}

/* Temperature indicator */
.pass-item .temp {
    font-size: 0.65rem;
    opacity: 0.7;
    display: block;
    margin-top: 2px;
}

/* Activity Section */
.activity-section {
    margin-bottom: 20px;
}

.activity-current {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(66, 133, 244, 0.05);
    border-radius: 8px;
    border-left: 3px solid var(--accent-color);
}

.activity-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.activity-text {
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* ============================================
   VOTE STATISTICS
   ============================================ */
.vote-stats {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
}

.vote-stats-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.vote-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

@media (max-width: 600px) {
    .vote-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.vote-stat {
    text-align: center;
}

.vote-stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.vote-stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* Color coding for stats */
.vote-stat:nth-child(1) .vote-stat-value { color: #34a853; } /* Unanimous - green */
.vote-stat:nth-child(2) .vote-stat-value { color: #4285F4; } /* Strong - blue */
.vote-stat:nth-child(3) .vote-stat-value { color: #fbbc04; } /* Weak - yellow */
.vote-stat:nth-child(4) .vote-stat-value { color: #ea4335; } /* Unresolved - red */

/* ============================================
   TIE-BREAKER SECTION
   ============================================ */
.tiebreaker-section {
    margin-bottom: 24px;
    padding: 20px;
    background: rgba(234, 67, 53, 0.05);
    border: 1px solid rgba(234, 67, 53, 0.2);
    border-radius: 12px;
}

.tiebreaker-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    color: #ea4335;
    margin-bottom: 12px;
}

.tiebreaker-info {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.tiebreaker-info span {
    font-weight: 700;
    color: #ea4335;
}

.tiebreaker-rounds {
    display: flex;
    gap: 8px;
}

.tiebreaker-round {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.tiebreaker-round.active {
    border-color: #ea4335;
    color: #ea4335;
    animation: pulse 1.5s infinite;
}

.tiebreaker-round.complete {
    border-color: #34a853;
    background: rgba(52, 168, 83, 0.1);
    color: #34a853;
}

/* ============================================
   LIVE LOG
   ============================================ */
.live-log {
    margin-top: 20px;
}

.live-log-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px 0;
}

.live-log-toggle:hover {
    color: var(--accent-color);
}

.live-log-toggle svg {
    transition: transform 0.2s ease;
}

.live-log[open] .live-log-toggle svg {
    transform: rotate(180deg);
}

.live-log-content {
    margin-top: 12px;
    max-height: 200px;
    overflow-y: auto;
    padding: 16px;
    background: var(--bg-tertiary, #1a1a2e);
    border-radius: 8px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.8rem;
}

.log-entry {
    padding: 4px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.log-entry:last-child {
    border-bottom: none;
}

.log-entry.info {
    color: #4285F4;
}

.log-entry.success {
    color: #34a853;
}

.log-entry.warning {
    color: #fbbc04;
}

.log-entry.error {
    color: #ea4335;
}

/* ============================================
   PROCESSING HINT
   ============================================ */
.processing-hint {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Spinner (ensure this exists) */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}
/* --------------------------------------------------------------------------
   Error
   -------------------------------------------------------------------------- */
.error {
    margin-top: var(--space-xl);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    background: var(--color-error-dim);
    border: 1px solid var(--color-error);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-md);
    color: var(--color-error);
}

.error-content {
    flex: 1;
}

.error-title {
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.error-message {
    font-size: 14px;
    opacity: 0.9;
}

.error-retry {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-error);
    color: var(--color-error);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.error-retry:hover {
    background: var(--color-error);
    color: white;
}

/* --------------------------------------------------------------------------
   Notice
   -------------------------------------------------------------------------- */
.notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: var(--color-warning-dim);
    border: 1px solid rgba(251, 188, 4, 0.3);
    font-size: 13px;
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

.notice svg {
    color: var(--color-warning);
    flex-shrink: 0;
}

.notice-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-accent);
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Results Section
   -------------------------------------------------------------------------- */
.results-section {
    padding: var(--space-xl) 0 var(--space-3xl);
}

.results-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.back-button {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.back-button:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.download-buttons {
    display: flex;
    gap: var(--space-sm);
}

.download-button {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    background: var(--color-accent);
    color: white;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.download-button:hover {
    background: var(--color-accent-hover);
}

.download-button--secondary {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
}

.download-button--secondary:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-hover);
}

/* --------------------------------------------------------------------------
   Score Overview
   -------------------------------------------------------------------------- */
.score-overview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

@media (max-width: 768px) {
    .score-overview {
        grid-template-columns: 1fr;
    }
}

.total-score {
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.score-circle {
    position: relative;
    width: 160px;
    height: 160px;
    margin-bottom: var(--space-md);
}

.score-ring {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.score-ring-bg {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 8;
}

.score-ring-fill {
    fill: none;
    stroke: var(--color-accent);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 440;
    stroke-dashoffset: 440;
    transition: stroke-dashoffset 1s ease-out;
}

.score-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.score-percent {
    display: block;
    font-family: var(--font-mono);
    font-size: 36px;
    font-weight: 600;
    color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Paper Info
   -------------------------------------------------------------------------- */
.paper-info {
    margin-bottom: var(--space-lg);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    text-align: center;
}

.paper-title {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
    line-height: 1.4;
}

.paper-subtitle {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.score-label {
    font-size: 11px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.score-raw {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.score-description {
    font-size: 13px;
    color: var(--color-text-muted);
}

.section-scores {
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
}

.section-scores-title {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
}

.section-bars {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.section-bar {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.section-bar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-bar-name {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.section-bar-percent {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.section-bar-track {
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--color-bg-tertiary);
    overflow: hidden;
}

.section-bar-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.5s ease-out;
}

/* --------------------------------------------------------------------------
   Detailed Results
   -------------------------------------------------------------------------- */
.detailed-results {
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.results-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.results-title {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
}

.filter-buttons {
    display: flex;
    gap: var(--space-xs);
}

.filter-button {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    font-size: 12px;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.filter-button:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-hover);
}

.filter-button.active {
    border-color: var(--color-accent);
    background: var(--color-accent-dim);
    color: var(--color-accent);
}

.filter-button span {
    opacity: 0.7;
}

/* Accordion */
.accordion-section {
    border-bottom: 1px solid var(--color-border);
}

.accordion-section:last-child {
    border-bottom: none;
}

.accordion-header {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    transition: background var(--transition-fast);
}

.accordion-header:hover {
    background: var(--color-bg-hover);
}

.accordion-header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.accordion-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.accordion-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
}

.accordion-count {
    font-size: 12px;
    color: var(--color-text-muted);
}

.accordion-chevron {
    color: var(--color-text-muted);
    transition: transform var(--transition-fast);
}

.accordion-section.open .accordion-chevron {
    transform: rotate(180deg);
}

.accordion-content {
    display: none;
    padding: 0 var(--space-lg) var(--space-lg);
}

.accordion-section.open .accordion-content {
    display: block;
}

/* Result Items */
.result-item {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    margin-bottom: var(--space-sm);
    animation: fadeIn 0.3s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-item:last-child {
    margin-bottom: 0;
}

.result-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.result-item-number {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-muted);
}

.result-item-score {
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
}

.result-item-score--full {
    background: var(--color-success-dim);
    color: var(--color-success);
}

.result-item-score--partial {
    background: var(--color-warning-dim);
    color: #b45309;
}

[data-theme="dark"] .result-item-score--partial {
    color: var(--color-warning);
}

.result-item-score--zero {
    background: var(--color-error-dim);
    color: var(--color-error);
}

.result-item-score--na {
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
}

.result-item-question {
    font-size: 13px;
    color: var(--color-text-primary);
    line-height: 1.5;
    margin-bottom: var(--space-md);
}

.result-item-evidence {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
}

.result-item-evidence svg {
    flex-shrink: 0;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.result-item-evidence p {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    font-style: italic;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-text {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.footer-text a {
    color: var(--color-accent);
}

.footer-subtext {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 13px;
    color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.hidden {
    display: none !important;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
    .header-content {
        padding: var(--space-md);
    }
    
    .logo-subtitle {
        display: none;
    }
    
    .nav-link span {
        display: none;
    }
    
    .hero {
        padding: var(--space-xl) 0;
    }
    
    .stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .results-nav {
        flex-direction: column;
        align-items: stretch;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .download-button {
        justify-content: center;
    }
    
    .filter-buttons {
        flex-wrap: wrap;
    }
}

/* ==========================================================================
   Mode Selection Styles
   ========================================================================== */

.mode-selection {
    margin: 24px 0;
    padding: 20px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.mode-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.mode-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.mode-option {
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: flex-start;
    padding: 16px;
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.mode-option:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-secondary);
    transform: translateY(-1px);
}

.mode-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

/* Selected state - styles the card when radio is checked */
.mode-option:has(input[type="radio"]:checked) {
    border-color: var(--color-accent);
    background: var(--color-accent-dim);
    box-shadow: 0 0 0 1px var(--color-accent);
}

.mode-option:has(input[type="radio"]:checked) .mode-option-title {
    color: var(--color-accent);
}

.mode-option-content {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.mode-option-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.mode-option-desc {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.mode-hint {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    padding: 12px;
    background: var(--color-bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.mode-hint svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Mode Badge in Results
   -------------------------------------------------------------------------- */

.results-nav-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.mode-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #5e9eff 100%);
    color: white;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 8px var(--color-accent-glow);
    white-space: nowrap;
}

.mode-badge svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Responsive Adjustments for Mode Selection
   -------------------------------------------------------------------------- */

@media (max-width: 640px) {
    .mode-options {
        grid-template-columns: 1fr;
    }
    
    .mode-selection {
        padding: 16px;
    }
}

@media (max-width: 768px) {
    .results-nav-left {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    
    .mode-badge {
        justify-content: center;
    }
}