/* ==========================================================================
   THEME VARIABLES & CORE CONFIG
   ========================================================================== */
:root {
    /* Color Palette - Dark Theme */
    --bg-primary: #090d16;
    --bg-secondary: #0f172a;
    --card-bg: rgba(26, 35, 50, 0.75);
    --card-border: rgba(255, 255, 255, 0.08);
    
    /* Navbar & Footer Synchronized Colors */
    --nav-bg: rgba(15, 23, 42, 0.88);
    --nav-border: rgba(255, 255, 255, 0.12);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Brand Accent Colors */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.3);
    
    --color-blue: #3b82f6;
    --color-purple: #a855f7;
    --color-emerald: #10b981;
    --color-amber: #f59e0b;
    --color-rose: #f43f5e;
    --color-cyan: #06b6d4;

    /* Sentiment Indicators */
    --pos-color: #10b981;
    --neg-color: #f43f5e;
    --neu-color: #3b82f6;

    /* Radii & Shadows */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --shadow-soft: 0 8px 24px -6px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 16px 32px -8px rgba(0, 0, 0, 0.5);
    --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-primary: #f4f6f9;
    --bg-secondary: #e2e8f0;
    --card-bg: rgba(255, 255, 255, 0.88);
    --card-border: rgba(0, 0, 0, 0.08);
    
    --nav-bg: rgba(255, 255, 255, 0.92);
    --nav-border: rgba(0, 0, 0, 0.08);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --primary-glow: rgba(99, 102, 241, 0.2);
    --shadow-soft: 0 8px 24px -6px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 16px 32px -8px rgba(0, 0, 0, 0.12);
}
:root {
  /* LIGHT MODE (Default) */
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  
  --text-primary: #0f172a;      /* Deep Navy/Black for numbers & titles */
  --text-secondary: #64748b;    /* Clean Gray for metric titles */
  
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.25s ease-in-out;

  /* Accent Colors */
  --color-blue: #3b82f6;
  --color-purple: #a855f7;
  --color-emerald: #10b981;
  --color-amber: #f59e0b;
  --color-rose: #f43f5e;
}

/* DARK MODE OVERRIDES */
[data-theme="dark"], body.dark-theme {
  --card-bg: #1a2332;
  --card-border: rgba(255, 255, 255, 0.08);
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.5);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
}
/* Base Reset & Side Gap Controls */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
    transition: background-color 0.35s ease, color 0.35s ease;
}

/* Page Outer Padding to Ensure Clean Margin/Gaps Everywhere */
.page-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 32px;
}

/* Fix Background Canvas Glow Visibility */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    opacity: 0.8;
}

.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle at 20% 15%, rgba(99, 102, 241, 0.18), transparent 40%),
                radial-gradient(circle at 80% 65%, rgba(168, 85, 247, 0.15), transparent 40%),
                radial-gradient(circle at 50% 90%, rgba(6, 182, 212, 0.12), transparent 45%);
    z-index: 0;
    pointer-events: none;
}

main, header, footer {
    position: relative;
    z-index: 1;
}

.scroll-target {
    scroll-margin-top: 90px;
}

/* Typography & Headings (Compact Scale) */
h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-title {
    text-align: center;
    margin-bottom: 32px;
}

.section-title h2 {
    font-size: 1.75rem;
    margin-bottom: 8px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.gradient-text {
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Base Card Styling (Smaller & Sleeker) */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: var(--transition);
    box-shadow: var(--shadow-soft);
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.nav-wrapper {
    position: fixed;
    top: 14px;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    justify-content: center;
    padding: 0 32px;
}

.navbar {
    width: 100%;
    max-width: 1140px;
    height: 56px;
    background: var(--nav-bg);
    border: 1px solid var(--nav-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 800;
    font-size: 1.1rem;
}

.logo-icon-wrapper {
    width: 30px;
    height: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--color-purple));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 14px;
}

.badge-pro {
    font-size: 0.6rem;
    font-weight: 800;
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-color);
    padding: 2px 6px;
    border-radius: 100px;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 16px;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    transition: var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Interactive Theme Switcher */
.theme-toggle-interactive {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.toggle-track {
    width: 48px;
    height: 24px;
    background: var(--card-border);
    border-radius: 100px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5px;
}

.toggle-icon {
    font-size: 10px;
    color: var(--text-secondary);
    z-index: 1;
    display: flex;
    align-items: center;
}

.toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="light"] .toggle-thumb {
    transform: translateX(24px);
}

/* General Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.88rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

/* Explicit Fix for "Try Now" Button */
.btn-try-now {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: #ffffff !important;
    padding: 7px 16px;
    font-size: 0.82rem;
    font-weight: 700;
    box-shadow: 0 4px 12px var(--primary-glow);
    border: 1px solid rgba(255, 255, 255, 0.15);
    white-space: nowrap;
}

.btn-try-now:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.45);
    background: linear-gradient(135deg, #4f46e5, #4338ca);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: #ffffff;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    padding: 120px 0 50px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 36px;
    align-items: center;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 100px;
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.25);
    color: var(--primary-color);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 18px;
}

.hero-content h1 {
    font-size: 2.75rem;
    line-height: 1.15;
    margin-bottom: 16px;
}

.hero-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 12px;
}

.float-card {
    padding: 28px 24px;
    text-align: center;
    animation: floatAnim 6s ease-in-out infinite;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

@keyframes floatAnim {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.ai-graphic-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.2));
    color: var(--primary-color);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 32px;
}

.float-card h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.float-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Stats Bar */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 40px;
}

.stat-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-3px);
}

.stat-item h3 {
    font-size: 1.6rem;
    font-weight: 800;
}

.stat-item.accent-1 h3 { color: var(--color-blue); }
.stat-item.accent-2 h3 { color: var(--color-emerald); }
.stat-item.accent-3 h3 { color: var(--color-purple); }
.stat-item.accent-4 h3 { color: var(--color-amber); }

.stat-item p {
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-top: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

/* ==========================================================================
   REVIEW ANALYZER SECTION (Theme-Aware & Enhanced)
   ========================================================================== */

/* --- CSS Variables / Theme Defaults --- */
:root {
  /* Default Light Theme Values */
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  
  --input-bg: #f8fafc;
  --input-border: #cbd5e1;
  --box-inner-bg: #f8fafc;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --pos-color: #10b981;
  --neg-color: #f43f5e;
  --neu-color: #f59e0b;
  --primary-color: #6366f1;
  --primary-glow: rgba(99, 102, 241, 0.2);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Overrides */
[data-theme="dark"], body.dark-theme {
  --card-bg: #1e293b;
  --card-border: rgba(255, 255, 255, 0.08);
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.45);

  --input-bg: rgba(15, 23, 42, 0.6);
  --input-border: rgba(255, 255, 255, 0.12);
  --box-inner-bg: rgba(15, 23, 42, 0.4);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
}

/* --- Section Container --- */
.analyzer-section {
    padding: 50px 0;
}

/* --- Sample Input Chips --- */
.preset-chips {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    justify-content: center;
}

.chip-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-right: 4px;
}

.chip {
    padding: 7px 16px;
    border-radius: 100px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

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

/* Color-coded Sample Inputs */
.chip-pos { 
    border-color: rgba(16, 185, 129, 0.3); 
    background: rgba(16, 185, 129, 0.06); 
    color: var(--pos-color); 
}
.chip-pos:hover { 
    background: rgba(16, 185, 129, 0.15); 
    border-color: var(--pos-color); 
}

.chip-neg { 
    border-color: rgba(244, 63, 94, 0.3); 
    background: rgba(244, 63, 94, 0.06); 
    color: var(--neg-color); 
}
.chip-neg:hover { 
    background: rgba(244, 63, 94, 0.15); 
    border-color: var(--neg-color); 
}

.chip-neu { 
    border-color: rgba(245, 158, 11, 0.3); 
    background: rgba(245, 158, 11, 0.06); 
    color: var(--neu-color); 
}
.chip-neu:hover { 
    background: rgba(245, 158, 11, 0.15); 
    border-color: var(--neu-color); 
}

.chip-custom {
    border-color: rgba(99, 102, 241, 0.3);
    background: rgba(99, 102, 241, 0.06);
    color: var(--primary-color);
}
.chip-custom:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--primary-color);
}


/* --- Main Analyzer Card --- */
.analyzer-card {
    padding: 28px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.analyzer-card:hover {
    box-shadow: var(--shadow-hover);
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.toolbar-title {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.toolbar-btns {
    display: flex;
    gap: 8px;
}

.tool-btn {
    background: var(--box-inner-bg);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.tool-btn:hover {
    background: var(--primary-glow);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

textarea#review {
    width: 100%;
    height: 120px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.5;
    resize: vertical;
    outline: none;
    transition: var(--transition);
}

textarea#review:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-glow);
    background: var(--card-bg);
}

.counter-bar {
    display: flex;
    gap: 16px;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 10px 0 20px;
    font-weight: 500;
}

.action-row {
    display: flex;
    justify-content: flex-end;
}


/* ==========================================================================
   RESULT CARD SECTION
   ========================================================================== */

.result-card {
    margin-top: 28px;
    padding: 28px;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--card-border);
    border-left: 6px solid var(--primary-color);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.result-card:hover {
    box-shadow: var(--shadow-hover);
}

.result-card.positive { border-left-color: var(--pos-color); }
.result-card.negative { border-left-color: var(--neg-color); }
.result-card.neutral { border-left-color: var(--neu-color); }

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 22px;
}

.result-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sentiment-badge {
    padding: 6px 16px;
    border-radius: 100px;
    font-weight: 700;
    font-size: 0.88rem;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.sentiment-badge.positive { background: rgba(16, 185, 129, 0.12); color: var(--pos-color); border: 1px solid rgba(16, 185, 129, 0.3); }
.sentiment-badge.negative { background: rgba(244, 63, 94, 0.12); color: var(--neg-color); border: 1px solid rgba(244, 63, 94, 0.3); }
.sentiment-badge.neutral { background: rgba(245, 158, 11, 0.12); color: var(--neu-color); border: 1px solid rgba(245, 158, 11, 0.3); }

/* --- Multi-Colored Metric Grid --- */
.metrics-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.metric-box {
    background: var(--box-inner-bg);
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 8px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.metric-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.06);
}

/* Individual Color Borders for Metric Cards */
.metric-box:nth-child(1) { border-top: 3px solid #3b82f6; } /* Blue - Confidence */
.metric-box:nth-child(2) { border-top: 3px solid #f59e0b; } /* Amber - Stars */
.metric-box:nth-child(3) { border-top: 3px solid #a855f7; } /* Purple - Review Length */
.metric-box:nth-child(4) { border-top: 3px solid #14b8a6; } /* Teal - Processing Time */

.metric-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.metric-value {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
}

/* Progress Bars inside Cards */
.progress-bar-bg {
    width: 100%;
    height: 6px;
    background: rgba(148, 163, 184, 0.2);
    border-radius: 100px;
    overflow: hidden;
    margin-top: 6px;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 100px;
    background: var(--primary-color);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-bar-fill.positive { background: var(--pos-color); }
.progress-bar-fill.negative { background: var(--neg-color); }
.progress-bar-fill.neutral { background: var(--neu-color); }

/* --- Analyzed Text Preview Box --- */
.review-preview-box {
    background: var(--box-inner-bg);
    padding: 18px;
    border-radius: var(--radius-md);
    border: 1px dashed var(--card-border);
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
    transition: var(--transition);
}

.review-preview-box:hover {
    border-color: var(--primary-color);
    background: var(--card-bg);
}

.review-preview-box strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 6px;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
/* --- Additional Sample Input Chip Colors --- */

/* Mixed Sentiment (Cyan / Blue Accent) */
.chip-mix { 
    border-color: rgba(6, 182, 212, 0.3); 
    background: rgba(6, 182, 212, 0.08); 
    color: #0891b2; 
}
.chip-mix:hover { 
    background: rgba(6, 182, 212, 0.18); 
    border-color: #06b6d4; 
    color: #06b6d4;
}

/* Sarcastic Sentiment (Orange / Flame Accent) */
.chip-sarc { 
    border-color: rgba(249, 115, 22, 0.3); 
    background: rgba(249, 115, 22, 0.08); 
    color: #ea580c; 
}
.chip-sarc:hover { 
    background: rgba(249, 115, 22, 0.18); 
    border-color: #f97316; 
    color: #f97316;
}

/* --- Dark Theme Adjustments for Mixed & Sarcastic --- */
[data-theme="dark"] .chip-mix, 
body.dark-theme .chip-mix {
    color: #22d3ee;
    background: rgba(34, 211, 238, 0.12);
}

[data-theme="dark"] .chip-sarc, 
body.dark-theme .chip-sarc {
    color: #fb923c;
    background: rgba(251, 146, 60, 0.12);
}
/* --- Hide Result Card initially & set up smooth transition --- */
.result-card {
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    transform: translateY(20px);
    margin-top: 0;
    padding-top: 0;
    padding-bottom: 0;
    transition: 
        opacity 0.4s ease,
        transform 0.4s ease,
        max-height 0.5s cubic-bezier(0, 1, 0, 1),
        padding 0.4s ease,
        margin 0.4s ease;
}

/* --- Active State (Triggered via JavaScript) --- */
.result-card.active {
    opacity: 1;
    visibility: visible;
    max-height: 1000px; /* Big enough to fit content height */
    transform: translateY(0);
    margin-top: 28px;
    padding: 28px;
}
/* ==========================================================================
   ANALYTICS DASHBOARD SECTION
   ========================================================================== */
/* ==========================================================================
   ANALYTICS DASHBOARD SECTION
   ========================================================================== */
.dashboard-section {
    padding: 50px 0;
}

/* --- Metrics Grid --- */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.mini-metric {
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    
    /* Dynamic Theme Styles */
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--card-shadow);
}

.mini-metric::before {
    content: '';
    position: absolute;
    top: 0; 
    left: 0;
    width: 4px; 
    height: 100%;
}

.mini-metric:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.mini-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.mini-metric span {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.mini-metric strong {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* --- Theme-Aware Metric Variations --- */
.metric-blue { border-left-color: var(--color-blue); }
.metric-blue::before { background: var(--color-blue); }
.metric-blue .mini-icon { 
    background: rgba(59, 130, 246, 0.12); 
    color: var(--color-blue); 
}

.metric-purple { border-left-color: var(--color-purple); }
.metric-purple::before { background: var(--color-purple); }
.metric-purple .mini-icon { 
    background: rgba(168, 85, 247, 0.12); 
    color: var(--color-purple); 
}

.metric-emerald { border-left-color: var(--color-emerald); }
.metric-emerald::before { background: var(--color-emerald); }
.metric-emerald .mini-icon { 
    background: rgba(16, 185, 129, 0.12); 
    color: var(--color-emerald); 
}

.metric-amber { border-left-color: var(--color-amber); }
.metric-amber::before { background: var(--color-amber); }
.metric-amber .mini-icon { 
    background: rgba(245, 158, 11, 0.12); 
    color: var(--color-amber); 
}

.metric-rose { border-left-color: var(--color-rose); }
.metric-rose::before { background: var(--color-rose); }
.metric-rose .mini-icon { 
    background: rgba(244, 63, 94, 0.12); 
    color: var(--color-rose); 
}

/* Subtle accent tinting for light mode hover (Optional) */
.metric-blue:hover { border-color: rgba(59, 130, 246, 0.4); }
.metric-purple:hover { border-color: rgba(168, 85, 247, 0.4); }
.metric-emerald:hover { border-color: rgba(16, 185, 129, 0.4); }
.metric-amber:hover { border-color: rgba(245, 158, 11, 0.4); }
.metric-rose:hover { border-color: rgba(244, 63, 94, 0.4); }


/* --- Charts Grid --- */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.chart-card {
    padding: 20px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    
    /* Dynamic Theme Styles */
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--card-shadow);
}

.chart-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.chart-card-1 { border-top: 3px solid var(--color-blue); }
.chart-card-2 { border-top: 3px solid var(--color-purple); }
.chart-card-3 { border-top: 3px solid var(--color-emerald); }
.chart-card-4 { border-top: 3px solid var(--color-amber); }

.chart-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
}

.chart-header i {
    font-size: 1.05rem;
    color: var(--color-blue); /* Default accent or use var(--primary-color) */
}

.chart-header h3 {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-container {
    position: relative;
    height: 220px;
    width: 100%;
}

/* Responsive breakpoint for small screens */
@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}
/* ==========================================================================
   HOW IT WORKS SECTION
   ========================================================================== */
.workflow-section {
    padding: 50px 0;
}

.workflow-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    align-items: center;
    gap: 12px;
}

.step-card {
    padding: 24px 18px;
    text-align: center;
    position: relative;
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.step-card-1 { background: linear-gradient(160deg, rgba(59, 130, 246, 0.08), var(--card-bg)); border-color: rgba(59, 130, 246, 0.25); }
.step-card-2 { background: linear-gradient(160deg, rgba(168, 85, 247, 0.08), var(--card-bg)); border-color: rgba(168, 85, 247, 0.25); }
.step-card-3 { background: linear-gradient(160deg, rgba(16, 185, 129, 0.08), var(--card-bg)); border-color: rgba(16, 185, 129, 0.25); }

.step-num {
    position: absolute;
    top: 12px;
    right: 14px;
    font-size: 1.4rem;
    font-weight: 800;
    opacity: 0.18;
}

.step-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 14px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    transition: var(--transition);
}

.step-card-1 .step-icon { background: rgba(59, 130, 246, 0.2); color: var(--color-blue); }
.step-card-2 .step-icon { background: rgba(168, 85, 247, 0.2); color: var(--color-purple); }
.step-card-3 .step-icon { background: rgba(16, 185, 129, 0.2); color: var(--color-emerald); }

.step-card h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.workflow-arrow {
    font-size: 1.2rem;
    color: var(--text-muted);
}

/* ==========================================================================
   FEATURES SECTION
   ========================================================================== */
.features-section {
    padding: 50px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.feature-card {
    padding: 24px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feat-blue { background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), var(--card-bg)); border-color: rgba(59, 130, 246, 0.2); }
.feat-emerald { background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), var(--card-bg)); border-color: rgba(16, 185, 129, 0.2); }
.feat-purple { background: linear-gradient(135deg, rgba(168, 85, 247, 0.08), var(--card-bg)); border-color: rgba(168, 85, 247, 0.2); }
.feat-amber { background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), var(--card-bg)); border-color: rgba(245, 158, 11, 0.2); }

.feature-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 14px;
}

.feat-blue .feature-icon { background: rgba(59, 130, 246, 0.2); color: var(--color-blue); }
.feat-emerald .feature-icon { background: rgba(16, 185, 129, 0.2); color: var(--color-emerald); }
.feat-purple .feature-icon { background: rgba(168, 85, 247, 0.2); color: var(--color-purple); }
.feat-amber .feature-icon { background: rgba(245, 158, 11, 0.2); color: var(--color-amber); }

.feature-card h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

/* ==========================================================================
   MODEL INFORMATION
   ========================================================================== */
.model-section {
    padding: 50px 0;
}

.model-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-bottom: 18px;
}

.info-card {
    padding: 24px;
    position: relative;
    border-radius: var(--radius-lg);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.model-spec-card { background: linear-gradient(145deg, rgba(59, 130, 246, 0.08), var(--card-bg)); border-color: rgba(59, 130, 246, 0.25); }
.model-perf-card { background: linear-gradient(145deg, rgba(168, 85, 247, 0.08), var(--card-bg)); border-color: rgba(168, 85, 247, 0.25); }

.card-badge {
    position: absolute;
    top: 18px;
    right: 18px;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.spec-table {
    width: 100%;
    margin-top: 14px;
    border-collapse: collapse;
}

.spec-table td {
    padding: 8px 0;
    border-bottom: 1px solid var(--card-border);
    font-size: 0.88rem;
}

.spec-table tr:last-child td {
    border-bottom: none;
}

.perf-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.perf-box {
    padding: 12px;
    border-radius: var(--radius-sm);
    text-align: center;
}

.perf-acc { background: rgba(16, 185, 129, 0.15); border: 1px solid rgba(16, 185, 129, 0.3); color: var(--color-emerald); }
.perf-prec { background: rgba(59, 130, 246, 0.15); border: 1px solid rgba(59, 130, 246, 0.3); color: var(--color-blue); }
.perf-rec { background: rgba(168, 85, 247, 0.15); border: 1px solid rgba(168, 85, 247, 0.3); color: var(--color-purple); }
.perf-f1 { background: rgba(245, 158, 11, 0.15); border: 1px solid rgba(245, 158, 11, 0.3); color: var(--color-amber); }

.perf-box span {
    display: block;
    font-size: 0.72rem;
    text-transform: uppercase;
}

.perf-box strong {
    font-size: 1.25rem;
    font-weight: 800;
}

.model-summary-card {
    padding: 24px;
    border-top: 3px solid var(--primary-color);
}

.report-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
}

.report-table th, .report-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--card-border);
    font-size: 0.88rem;
}

.report-table th {
    color: var(--text-secondary);
    font-weight: 600;
}

.row-pos td:first-child { color: var(--pos-color); font-weight: 700; }
.row-neg td:first-child { color: var(--neg-color); font-weight: 700; }
.row-neu td:first-child { color: var(--neu-color); font-weight: 700; }

/* ==========================================================================
   DATASET SECTION
   ========================================================================== */
.dataset-section {
    padding: 50px 0;
}

.dataset-card {
    padding: 36px 24px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(168, 85, 247, 0.08));
    border: 1px solid rgba(99, 102, 241, 0.25);
    text-align: center;
}

.dataset-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 36px -10px rgba(99, 102, 241, 0.2);
}

.dataset-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 100px;
    background: rgba(99, 102, 241, 0.18);
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.dataset-info h2 {
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.dataset-info p {
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto 20px;
    font-size: 0.92rem;
}

.dataset-highlights {
    display: flex;
    justify-content: center;
    gap: 12px;
    list-style: none;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.highlight-item {
    padding: 8px 16px;
    border-radius: 100px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    font-size: 0.85rem;
}

.highlight-item.blue { border-color: rgba(59, 130, 246, 0.3); color: var(--color-blue); }
.highlight-item.purple { border-color: rgba(168, 85, 247, 0.3); color: var(--color-purple); }
.highlight-item.emerald { border-color: rgba(16, 185, 129, 0.3); color: var(--color-emerald); }
.highlight-item.amber { border-color: rgba(245, 158, 11, 0.3); color: var(--color-amber); }

/* ==========================================================================
   FAQ SECTION
   ========================================================================== */
.faq-section {
    padding: 50px 0;
}

.faq-accordion {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
    background: var(--card-bg);
    border-top: 1px solid var(--card-border);
    border-right: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
}

.faq-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.faq-card-1 { border-left-color: #3b82f6; background: linear-gradient(90deg, rgba(59, 130, 246, 0.06), var(--card-bg)); }
.faq-card-2 { border-left-color: #a855f7; background: linear-gradient(90deg, rgba(168, 85, 247, 0.06), var(--card-bg)); }
.faq-card-3 { border-left-color: #10b981; background: linear-gradient(90deg, rgba(16, 185, 129, 0.06), var(--card-bg)); }
.faq-card-4 { border-left-color: #f59e0b; background: linear-gradient(90deg, rgba(245, 158, 11, 0.06), var(--card-bg)); }
.faq-card-5 { border-left-color: #ec4899; background: linear-gradient(90deg, rgba(236, 72, 153, 0.06), var(--card-bg)); }
.faq-card-6 { border-left-color: #06b6d4; background: linear-gradient(90deg, rgba(6, 182, 212, 0.06), var(--card-bg)); }

.faq-question {
    width: 100%;
    padding: 16px 20px;
    background: none;
    border: none;
    text-align: left;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 20px;
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.faq-item.active .faq-answer {
    max-height: 180px;
    padding: 0 20px 16px;
}

/* ==========================================================================
   CONTACT SECTION & DYNAMIC THEME CONTROLS
   ========================================================================== */
.contact-section {
    padding: 50px 0 70px;
}

.contact-container {
    max-width: 580px;
    margin: 0 auto;
}

.contact-card {
    padding: 36px 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border-top: 3px solid var(--primary-color) !important;
}

/* 1. Default Dark Theme Styles */
.contact-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-soft);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.contact-header {
    text-align: center;
    margin-bottom: 24px;
}

.contact-header h2,
.contact-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 8px;
}

.contact-header p,
.contact-subtitle {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 24px;
    line-height: 1.4;
}

.form-group {
    margin-bottom: 16px;
}

.form-group input, 
.form-group textarea,
.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.92rem;
    outline: none;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder,
.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus, 
.form-group textarea:focus,
.form-input:focus,
.form-textarea:focus {
    background: rgba(0, 0, 0, 0.3);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.btn-contact,
.btn-submit {
    width: 100%;
    padding: 12px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: #ffffff !important;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
    transition: var(--transition);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-contact:hover,
.btn-submit:hover {
    background: linear-gradient(135deg, #4f46e5, #4338ca);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.45);
}

.btn-contact:active,
.btn-submit:active {
    transform: translateY(0);
}

/* 2. Light Theme Overrides for Contact Section */
[data-theme="light"] .contact-card {
    background-color: #ffffff !important;
    border: 1px solid rgba(0, 0, 0, 0.08) !important;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05) !important;
}

[data-theme="light"] .contact-title,
[data-theme="light"] .contact-header h2 {
    color: #0f172a !important;
}

[data-theme="light"] .contact-subtitle,
[data-theme="light"] .contact-header p {
    color: #64748b !important;
}

[data-theme="light"] .form-group input, 
[data-theme="light"] .form-group textarea,
[data-theme="light"] .form-input,
[data-theme="light"] .form-textarea {
    background-color: #f8fafc !important;
    border: 1.5px solid #cbd5e1 !important;
    color: #0f172a !important;
}

[data-theme="light"] .form-group input::placeholder,
[data-theme="light"] .form-group textarea::placeholder,
[data-theme="light"] .form-input::placeholder,
[data-theme="light"] .form-textarea::placeholder {
    color: #94a3b8 !important;
}

[data-theme="light"] .form-group input:focus, 
[data-theme="light"] .form-group textarea:focus,
[data-theme="light"] .form-input:focus,
[data-theme="light"] .form-textarea:focus {
    background-color: #ffffff !important;
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 3px var(--primary-glow) !important;
}

/* ==========================================================================
   FOOTER (SYNCHRONIZED WITH NAVBAR)
   ========================================================================== */
.site-footer {
    width: 100%;
    background: var(--nav-bg);
    border-top: 1px solid var(--nav-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 0;
    transition: var(--transition);
}

.footer-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-container p {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 14px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    transition: var(--transition);
}

.github-link:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border-color: #6e5494;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(110, 84, 148, 0.3);
}

[data-theme="light"] .github-link:hover {
    background: #24292e;
    color: #ffffff;
}

.linkedin-link:hover {
    background: rgba(10, 102, 194, 0.15);
    color: #0a66c2;
    border-color: #0a66c2;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(10, 102, 194, 0.3);
}

.back-top-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.82rem;
    padding: 6px 14px;
    border-radius: 100px;
    background: rgba(99, 102, 241, 0.1);
    transition: var(--transition);
}

.back-top-btn:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

/* ==========================================================================
   RESPONSIVE ADJUSTMENTS
   ========================================================================== */
@media (max-width: 992px) {
    .page-container, .footer-container, .nav-wrapper {
        padding-left: 20px;
        padding-right: 20px;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-desc {
        margin: 0 auto 24px;
    }

    .hero-actions {
        justify-content: center;
    }

    .workflow-grid {
        grid-template-columns: 1fr;
    }

    .workflow-arrow {
        transform: rotate(90deg);
        margin: 4px auto;
    }

    .charts-grid, .model-grid {
        grid-template-columns: 1fr;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-content h1 {
        font-size: 2.1rem;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
    }

    .stats-bar {
        grid-template-columns: 1fr;
    }

}