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

:root {
    /* Dark Theme (Default) - Smooth transitions */
    --primary-color: #8b17b6;
    --primary-glow: rgba(139, 23, 182, 0.4);
    --secondary-color: #00ffea;
    --secondary-glow: rgba(0, 255, 234, 0.3);
    --accent-color: #ff2a6d;
    --accent-glow: rgba(255, 42, 109, 0.3);
    --success-color: #00ff88;
    --success-glow: rgba(0, 255, 136, 0.3);
    --warning-color: #ffaa00;
    --error-color: #ff2a6d;
    --text-color: #f0f0f0;
    --text-muted: #a0a0a0;
    --bg-primary: #0a0a12;
    --bg-secondary: #1a0a2a;
    --bg-card: rgba(18, 18, 28, 0.95);
    --border-color: rgba(139, 23, 182, 0.3);
    --glass-effect: rgba(255, 255, 255, 0.05);
    --shadow-primary: 0 0 15px var(--primary-glow);
    --shadow-secondary: 0 0 10px var(--secondary-glow);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 16px;
    --font-main: 'Poppins', sans-serif;
    --font-tech: 'Orbitron', monospace;
}

[data-theme="light"] {
    --primary-color: #6c0b9a;
    --secondary-color: #00ccbb;
    --accent-color: #ff2a6d;
    --success-color: #00cc66;
    --text-color: #222222;
    --text-muted: #666666;
    --bg-primary: #f5f5fa;
    --bg-secondary: #e6e6f0;
    --bg-card: rgba(255, 255, 255, 0.95);
    --border-color: rgba(108, 11, 154, 0.2);
    --glass-effect: rgba(0, 0, 0, 0.03);
}

/* Smooth theme transition */
* {
    transition: background-color 0.3s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

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

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    /* ... existing styles ... */
    opacity: 1;
    visibility: visible;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.loading-logo {
    margin-bottom: 30px;
}

.logo-pulse {
    width: 180px;
    height: 180px;
    object-fit: contain;
    animation: pulseFloat 2s ease-in-out infinite;
    filter: drop-shadow(0 0 20px var(--primary-glow));
}

@keyframes pulseFloat {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

.loading-text h2 {
    font-family: var(--font-tech);
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 10px;
}

.loading-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.loading-bar {
    width: 300px;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    animation: loadingProgress 2s ease-in-out infinite;
    border-radius: 3px;
}

@keyframes loadingProgress {
    0% { width: 0%; }
    50% { width: 100%; }
    100% { width: 0%; }
}

/* Background */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
}

.gradient-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(10, 10, 18, 0.95) 0%,
        rgba(26, 10, 42, 0.85) 50%,
        rgba(10, 18, 42, 0.95) 100%);
}

[data-theme="light"] .gradient-bg {
    background: linear-gradient(135deg, 
        rgba(245, 245, 250, 0.95) 0%,
        rgba(230, 230, 240, 0.85) 50%,
        rgba(235, 235, 245, 0.95) 100%);
}

.particles-container {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    border-radius: 50%;
    animation: floatParticle linear infinite;
    opacity: 0.3;
    pointer-events: none;
}

@keyframes floatParticle {
    from { transform: translateY(100vh) rotate(0deg); }
    to { transform: translateY(-100vh) rotate(360deg); }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 15px 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Logo */
.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.floating-logo {
    position: relative;
    width: 60px;
    height: 60px;
}

.header-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    animation: floatLogo 3s ease-in-out infinite;
    filter: drop-shadow(0 0 15px var(--primary-glow));
}

@keyframes floatLogo {
    0%, 100% { 
        transform: translateY(0) rotate(0deg) scale(1);
    }
    25% { 
        transform: translateY(-5px) rotate(2deg) scale(1.02);
    }
    75% { 
        transform: translateY(3px) rotate(-1deg) scale(0.98);
    }
}

.logo-text h1 {
    font-family: var(--font-tech);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-color);
}

.ai-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
}

.logo-text p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: -5px;
}

/* Right Side Icons */
.right-icons {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Contact Icon */
.contact-icon-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--glass-effect);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.contact-icon-btn:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    transform: rotate(10deg) scale(1.1);
    color: white;
}

/* Theme Toggle */
.theme-toggle button {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--glass-effect);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle button:hover {
    background: var(--primary-color);
    transform: rotate(30deg);
}

/* History Menu */
.history-menu-container {
    position: relative;
}

.history-menu-btn {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border: none;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    font-size: 1.2rem;
    transition: var(--transition);
    box-shadow: var(--shadow-primary);
}

.history-menu-btn:hover {
    transform: rotate(15deg) scale(1.1);
    box-shadow: 0 0 25px var(--primary-glow);
}

.history-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--error-color);
    color: white;
    font-size: 0.7rem;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* History Side Panel */
.history-side-panel {
    position: fixed;
    top: 0;
    left: -400px;
    width: 380px;
    height: 100vh;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-color);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
    z-index: 1002;
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.history-side-panel.active {
    left: 0;
}

.panel-header {
    padding: 25px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
}

.panel-header h3 {
    color: var(--text-color);
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.panel-header h3 i {
    color: var(--secondary-color);
}

.close-panel-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--glass-effect);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-panel-btn:hover {
    background: var(--error-color);
    color: white;
    transform: rotate(90deg);
}

.panel-stats {
    padding: 15px 20px;
    display: flex;
    gap: 20px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.1);
}

.panel-stats .stat {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.panel-stats .stat i {
    color: var(--secondary-color);
}

.history-list-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

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

.history-item {
    background: var(--glass-effect);
    border-radius: 12px;
    padding: 15px;
    border-left: 4px solid var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
    animation: slideInItem 0.3s ease;
}

@keyframes slideInItem {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.history-item:hover {
    transform: translateX(5px);
    background: rgba(139, 23, 182, 0.15);
    box-shadow: var(--shadow-primary);
}

.history-model {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.history-query {
    color: var(--text-color);
    font-size: 0.95rem;
    margin-bottom: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
}

.history-time {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
}

.history-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.history-empty i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
    color: var(--primary-color);
}

.panel-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
}

.clear-history-btn {
    width: 100%;
    padding: 12px;
    background: rgba(255, 42, 109, 0.1);
    border: 1px solid var(--error-color);
    border-radius: 10px;
    color: var(--error-color);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.clear-history-btn:hover {
    background: var(--error-color);
    color: white;
}

/* Panel Overlay */
.panel-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 1001;
    display: none;
}

.panel-overlay.active {
    display: block;
}

/* Navigation */
.nav {
    display: flex;
    gap: 20px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-color);
    background: var(--glass-effect);
    box-shadow: var(--shadow-primary);
}

/* Main Container */
main.container {
    max-width: 1400px;
    margin: 120px auto 40px;
    padding: 0 20px;
}

/* Hero Section */
.hero-section {
    margin-bottom: 60px;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-text {
    flex: 1;
}

.hero-title {
    font-family: var(--font-tech);
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradientShift 3s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin-bottom: 30px;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.hero-stats .stat {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 25px;
    background: var(--glass-effect);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.hero-stats .stat:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.hero-stats .stat i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.hero-stats .stat span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
}

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

.floating-ai {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: white;
    animation: float3D 4s ease-in-out infinite;
    box-shadow: 
        0 0 50px var(--primary-glow),
        inset 0 0 50px rgba(255, 255, 255, 0.1);
}

@keyframes float3D {
    0%, 100% { transform: translateY(0) rotateX(0) rotateY(0); }
    25% { transform: translateY(-20px) rotateX(5deg) rotateY(5deg); }
    50% { transform: translateY(0) rotateX(0) rotateY(10deg); }
    75% { transform: translateY(10px) rotateX(-5deg) rotateY(-5deg); }
}

/* Sections */
.section-title {
    font-family: var(--font-tech);
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 15px;
}

.section-title i {
    color: var(--secondary-color);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 40px;
}

/* ============================================= */
/* SCROLLABLE MODELS SECTION v2.0 */
/* ============================================= */

.models-section {
    margin-bottom: 80px;
    position: relative;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 15px;
}

.section-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.model-count {
    background: var(--glass-effect);
    padding: 8px 16px;
    border-radius: 30px;
    font-size: 0.9rem;
    color: var(--secondary-color);
    border: 1px solid var(--border-color);
    font-weight: 500;
}

.scroll-arrows {
    display: flex;
    gap: 10px;
}

.scroll-arrow {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--glass-effect);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-arrow:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    transform: scale(1.1);
    color: white;
    border-color: transparent;
}

.scroll-arrow.left-arrow {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
}

.scroll-arrow.right-arrow {
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    color: white;
}

.scroll-arrow:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

/* Scrollable Models Container */
.models-scroll-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
}

.models-scroll-wrapper {
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 10px 5px;
    margin: -10px -5px;
}

.models-scroll-wrapper::-webkit-scrollbar {
    display: none;
}

.models-grid.scrollable {
    display: flex;
    flex-wrap: nowrap;
    gap: 25px;
    padding: 10px 5px;
    width: max-content;
}

.models-grid.scrollable .model-card {
    width: 320px;
    min-width: 320px;
    flex-shrink: 0;
    margin: 0;
}

/* Model Cards */
.model-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 25px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.model-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.model-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.model-card.featured {
    border: 2px solid transparent;
    background: linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
                linear-gradient(135deg, var(--primary-color), var(--secondary-color)) border-box;
    box-shadow: 0 10px 30px rgba(139, 23, 182, 0.2);
}

.model-card.featured::before {
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    height: 5px;
}

.model-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 20px;
}

/* Model Background Colors */
.gemini-bg { background: linear-gradient(135deg, #4285f4, #34a853); }
.meta-bg { background: linear-gradient(135deg, #0088cc, #1877f2); }
.deepseek-bg { background: linear-gradient(135deg, #00aaff, #0066cc); }
.coding-bg { background: linear-gradient(135deg, #6c0b9a, #00ccbb); }

.model-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-color);
}

.model-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.5;
}

.model-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.tag {
    padding: 5px 12px;
    background: var(--glass-effect);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--secondary-color);
    border: 1px solid var(--border-color);
}

.model-select-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.model-select-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 25px var(--primary-glow);
}

/* Model Indicators */
.model-indicators {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 20px;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.indicator.active {
    width: 30px;
    border-radius: 10px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--shadow-primary);
}

/* Chat Section */
.chat-section {
    margin-bottom: 80px;
}

.chat-container {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    position: relative;
}

.chat-header {
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.selected-model-display {
    display: flex;
    align-items: center;
    gap: 20px;
}

.current-model {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 25px;
    background: var(--glass-effect);
    border-radius: 50px;
    border: 1px solid var(--primary-color);
}

.current-model i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.current-model span {
    font-weight: 600;
    color: var(--text-color);
}

.model-status {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--success-color);
    font-size: 0.95rem;
}

.chat-controls {
    display: flex;
    gap: 10px;
}

.chat-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--glass-effect);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

.chat-btn:hover {
    background: rgba(139, 23, 182, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.chat-messages {
    height: 500px;
    overflow-y: auto;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    position: relative;
}

/* Chat messages styling */
.message {
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
    animation: fadeInUp 0.3s ease;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    font-size: 1.2rem;
}

.message-content {
    flex: 1;
    background: var(--glass-effect);
    padding: 20px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.message-user .message-content {
    background: rgba(139, 23, 182, 0.1);
    border-color: var(--primary-color);
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.message-sender {
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.message-time {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.message-text {
    color: var(--text-color);
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.message-text a {
    color: var(--secondary-color);
    text-decoration: none;
    border-bottom: 1px dashed var(--secondary-color);
    transition: var(--transition);
}

.message-text a:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Message typing indicator */
.message-typing .message-content {
    padding: 15px 20px;
}

.typing-dots {
    display: flex;
    gap: 5px;
    padding: 5px 0;
}

.typing-dots .dot {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: typingWave 1.4s infinite ease-in-out;
}

.typing-dots .dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dots .dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typingWave {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}

.welcome-message {
    background: linear-gradient(135deg, rgba(139, 23, 182, 0.1), rgba(0, 255, 234, 0.1));
    border: 1px solid var(--primary-color);
    border-radius: 15px;
    padding: 25px;
    margin: 20px 0;
}

.welcome-message h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.welcome-message ul {
    margin: 15px 0;
    padding-left: 20px;
}

.welcome-message li {
    margin-bottom: 8px;
    color: var(--text-muted);
}

/* ============================================= */
/* FIXED CODE BLOCK FORMATTING */
/* ============================================= */

.message-text pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 15px;
    overflow-x: auto;
    margin: 10px 0;
    border: 1px solid var(--border-color);
}

.message-text code {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.message-text :not(pre) > code {
    background: rgba(139, 23, 182, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--secondary-color);
}

/* Code blocks with proper HTML tag display */
.code-block {
    background: #1a1a2a;
    border-radius: 12px;
    margin: 20px 0;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.code-block .code-header {
    background: #0f0f1a;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--secondary-color);
}

.copy-code-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    margin-left: auto;
    transition: all 0.3s ease;
}

.copy-code-btn:hover {
    background: var(--primary-color);
    color: white;
}

.code-block pre {
    margin: 0;
    padding: 20px;
    background: #0a0a12;
    overflow-x: auto;
    line-height: 1.5;
}

.code-block code {
    display: block;
    color: #e2e2e2;
    background: transparent;
    padding: 0;
    font-size: 0.95rem;
    font-family: 'Courier New', monospace;
    white-space: pre;
    tab-size: 4;
}

/* Syntax highlighting colors */
.code-block .hljs-tag,
.code-block .hljs-name,
.code-block .hljs-attr {
    color: #ff79c6;
}

/* Fallback badge */
.fallback-badge {
    background: rgba(255, 170, 0, 0.2);
    color: #ffaa00;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    margin-left: 8px;
}

.response-time {
    background: rgba(0, 255, 136, 0.1);
    color: #00ff88;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    margin-left: 8px;
}

/* Dark theme for code */
[data-theme="dark"] .code-block pre {
    background: #0d1117;
}

[data-theme="light"] .code-block pre {
    background: #f6f8fa;
}

[data-theme="light"] .code-block code {
    color: #24292e;
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 20px 30px;
    border: 1px solid var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    display: none;
    align-items: center;
    gap: 15px;
    z-index: 100;
    animation: fadeIn 0.3s ease;
}

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

.loading-spinner {
    display: flex;
    align-items: center;
    gap: 15px;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid rgba(139, 23, 182, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 0.8s linear infinite;
}

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

/* Chat Input */
.chat-input-container {
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid var(--border-color);
}

.input-group {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.input-group textarea {
    flex: 1;
    padding: 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    color: var(--text-color);
    font-size: 1rem;
    font-family: var(--font-main);
    resize: none;
    transition: var(--transition);
}

.input-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-primary);
}

.send-btn {
    padding: 0 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border: none;
    border-radius: 15px;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}

.send-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-primary);
}

.input-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.option-btn {
    padding: 10px 20px;
    background: var(--glass-effect);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-color);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.option-btn:hover {
    background: rgba(139, 23, 182, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Code Section */
.code-section {
    margin-bottom: 80px;
}

.code-help-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.code-input, .code-output {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.code-header, .output-header {
    padding: 15px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.code-header h4, .output-header h4 {
    color: var(--text-color);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.language-selector select {
    padding: 10px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-color);
    font-size: 0.95rem;
    cursor: pointer;
}

.code-actions, .output-actions {
    display: flex;
    gap: 10px;
}

.code-btn, .output-btn {
    padding: 8px 15px;
    background: var(--glass-effect);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.code-btn:hover, .output-btn:hover {
    background: rgba(139, 23, 182, 0.1);
    border-color: var(--primary-color);
}

#codeInput {
    width: 100%;
    padding: 20px;
    background: transparent;
    border: none;
    color: var(--text-color);
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    resize: none;
    line-height: 1.6;
    min-height: 300px;
}

#codeInput:focus {
    outline: none;
}

.output-content {
    padding: 20px;
    min-height: 300px;
    color: var(--text-color);
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.quick-help {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 25px;
    border: 1px solid var(--border-color);
}

.quick-help h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.quick-help-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.quick-help-btn {
    padding: 12px 25px;
    background: var(--glass-effect);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
}

.quick-help-btn:hover {
    background: rgba(139, 23, 182, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

/* About Section */
.about-section {
    margin-bottom: 60px;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.about-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 30px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.about-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.about-card p {
    color: var(--text-muted);
    line-height: 1.6;
}

.developer-info {
    background: linear-gradient(135deg, rgba(139, 23, 182, 0.1), rgba(0, 255, 234, 0.1));
    border-radius: var(--border-radius);
    padding: 30px;
    border: 1px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: 30px;
}

.developer-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.developer-details h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.developer-details p {
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.6;
}

.developer-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.dev-link {
    padding: 10px 20px;
    background: var(--glass-effect);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.dev-link:hover {
    background: rgba(139, 23, 182, 0.2);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Floating Navigation Buttons */
.floating-nav {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.float-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-primary);
}

.float-btn:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 0 30px var(--primary-glow);
}

.refresh-btn {
    background: linear-gradient(135deg, var(--secondary-color), #00aaff);
}

/* Status Footer */
.status-footer {
    margin-top: 60px;
    padding: 30px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.status-indicators {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--success-color);
    box-shadow: 0 0 10px var(--success-glow);
}

.status-dot.active {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.footer-copyright {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.version {
    margin-top: 10px;
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 50px;
    padding: 12px 25px;
    border: 1px solid var(--success-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast i {
    color: var(--success-color);
    font-size: 1.2rem;
}

.toast-message {
    color: var(--text-color);
    font-weight: 500;
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

/* ============================================= */
/* RESPONSIVE DESIGN */
/* ============================================= */

@media (max-width: 1200px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .code-help-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .header .container {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .nav {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 15px;
    }
    
    .nav-link span {
        display: inline;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .floating-ai {
        width: 250px;
        height: 250px;
        font-size: 6rem;
    }
    
    /* Scrollable models responsive */
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .section-controls {
        width: 100%;
        justify-content: space-between;
    }
    
    .models-grid.scrollable .model-card {
        width: 280px;
        min-width: 280px;
    }
}

@media (max-width: 768px) {
    .header .container {
        padding: 0 15px;
    }
    
    .logo-text p {
        display: none;
    }
    
    .nav-link span {
        display: none;
    }
    
    .nav-link i {
        font-size: 1.4rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .floating-ai {
        width: 200px;
        height: 200px;
        font-size: 5rem;
    }
    
    .chat-header {
        flex-direction: column;
        gap: 15px;
    }
    
    .selected-model-display {
        width: 100%;
        justify-content: space-between;
    }
    
    .chat-controls {
        width: 100%;
        justify-content: center;
    }
    
    .history-side-panel {
        width: 320px;
    }
    
    .status-indicators {
        gap: 20px;
    }
    
    .developer-info {
        flex-direction: column;
        text-align: center;
    }
    
    /* Scrollable models mobile */
    .models-grid.scrollable .model-card {
        width: 260px;
        min-width: 260px;
    }
    
    .model-count {
        font-size: 0.85rem;
        padding: 6px 12px;
    }
    
    .scroll-arrow {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .header .container {
        padding: 0 10px;
    }
    
    .logo-container {
        gap: 10px;
    }
    
    .logo-text h1 {
        font-size: 1.5rem;
    }
    
    .header-logo {
        width: 50px;
        height: 50px;
    }
    
    .right-icons {
        gap: 8px;
    }
    
    .history-menu-btn, .contact-icon-btn, .theme-toggle button {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-stats {
        gap: 10px;
    }
    
    .hero-stats .stat {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .floating-nav {
        bottom: 20px;
        right: 20px;
    }
    
    .float-btn {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    
    .history-side-panel {
        width: 280px;
    }
    
    /* Scrollable models extra small */
    .models-grid.scrollable {
        gap: 15px;
    }
    
    .models-grid.scrollable .model-card {
        width: 240px;
        min-width: 240px;
    }
    
    .indicator.active {
        width: 20px;
    }
}