/* ===========================================
   AI-ONE - Premium Design System
   All In One - 모든 AI의 지혜를 하나로
   Version 2.0 - Enhanced UI/UX
   =========================================== */

/* CSS Variables - Design Tokens */
:root {
    /* Colors - Dark Theme (Default) */
    --color-bg-primary: #06060a;
    --color-bg-secondary: #0d0d14;
    --color-bg-tertiary: #14141f;
    --color-bg-card: rgba(20, 20, 31, 0.7);
    --color-bg-card-solid: #14141f;
    --color-bg-card-hover: rgba(30, 30, 45, 0.9);
    --color-bg-glass: rgba(255, 255, 255, 0.03);

    --color-text-primary: #f5f5f7;
    --color-text-secondary: #9898a8;
    --color-text-muted: #5a5a6a;

    --color-accent-primary: #6366f1;
    --color-accent-secondary: #8b5cf6;
    --color-accent-tertiary: #a855f7;
    --color-accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --color-accent-gradient-vibrant: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);

    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.15);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.15);
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.15);
    --color-info: #3b82f6;
    --color-info-bg: rgba(59, 130, 246, 0.15);

    /* AI Brand Colors */
    --color-gpt: #10a37f;
    --color-gemini: #4285f4;
    --color-claude: #cc785c;
    --color-llama: #ff6b35;
    --color-cohere: #8b5cf6;
    --color-mistral: #ff4444;

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: 20px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.4);
    --shadow-glow-sm: 0 0 30px rgba(99, 102, 241, 0.3);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.05);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Fonts */
    --font-primary: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;
}

/* Light Theme */
[data-theme="light"] {
    --color-bg-primary: #f8f9fc;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f0f1f5;
    --color-bg-card: rgba(255, 255, 255, 0.9);
    --color-bg-card-solid: #ffffff;
    --color-bg-card-hover: rgba(248, 249, 252, 1);
    --color-bg-glass: rgba(255, 255, 255, 0.7);

    --color-text-primary: #1a1a2e;
    --color-text-secondary: #4a4a5a;
    --color-text-muted: #8a8a9a;

    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.08);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.2);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

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

/* =========================================
   Background Effects
   ========================================= */
.bg-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
    animation: float 25s infinite ease-in-out;
}

.orb-1 {
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, transparent 60%);
    top: -300px;
    right: -300px;
    animation-delay: 0s;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.35) 0%, transparent 60%);
    bottom: -200px;
    left: -200px;
    animation-delay: -8s;
}

.orb-3 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, transparent 60%);
    top: 40%;
    left: 30%;
    transform: translate(-50%, -50%);
    animation-delay: -16s;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

[data-theme="light"] .grid-overlay {
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(50px, -50px) scale(1.1);
    }

    50% {
        transform: translate(-30px, 30px) scale(0.95);
    }

    75% {
        transform: translate(20px, 40px) scale(1.05);
    }
}

/* Particles Container */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* =========================================
   App Container
   ========================================= */
.app-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* =========================================
   Header
   ========================================= */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

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

.logo-icon-wrapper {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon {
    font-size: 1.8rem;
    position: relative;
    z-index: 2;
}

.logo-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: var(--color-accent-gradient);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.3;
    animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
    0% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 0.4;
    }

    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.1;
    }

    100% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 0.4;
    }
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.logo-tagline {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-accent-secondary);
    padding: 4px 10px;
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    gap: var(--space-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

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

.nav-icon {
    font-size: 1rem;
}

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

.btn-theme {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    background: var(--color-bg-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 1.2rem;
}

.btn-theme:hover {
    background: var(--color-bg-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.icon-sun {
    display: none;
}

[data-theme="light"] .icon-moon {
    display: none;
}

[data-theme="light"] .icon-sun {
    display: block;
}

.btn-premium {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-accent-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-premium:hover::before {
    left: 100%;
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-sm);
}

.premium-badge {
    font-size: 0.65rem;
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    font-weight: 700;
}

/* =========================================
   Main Content
   ========================================= */
.main-content {
    flex: 1;
    max-width: 960px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
    width: 100%;
}

/* =========================================
   Hero Section
   ========================================= */
.hero-section {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.6s ease;
}

.badge-icon {
    font-size: 1rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-xl);
    letter-spacing: -0.03em;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.title-line {
    display: block;
}

.gradient-text {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.animated-gradient {
    background-size: 200% 200%;
    animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {

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

    50% {
        background-position: 100% 50%;
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    min-height: 60px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.typewriter {
    display: inline;
}

.typewriter::after {
    content: '|';
    animation: blink 1s infinite;
    color: var(--color-accent-primary);
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.hero-stats {
    display: inline-flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    animation: fadeInUp 0.6s ease 0.3s both;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* =========================================
   Query Section
   ========================================= */
.query-section {
    margin-bottom: var(--space-xl);
}

.query-container {
    position: relative;
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-2xl);
    border: 1px solid var(--glass-border);
    padding: var(--space-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
}

.query-container:focus-within {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-card), 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.query-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.query-container:focus-within .query-glow {
    opacity: 1;
}

.query-input-wrapper {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    margin-bottom: var(--space-md);
}

.input-icon {
    font-size: 1.5rem;
    padding-top: var(--space-xs);
    opacity: 0.7;
}

.query-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: 1.1rem;
    font-family: var(--font-primary);
    resize: none;
    outline: none;
    line-height: 1.6;
    min-height: 60px;
}

.query-input::placeholder {
    color: var(--color-text-muted);
}

.input-actions {
    display: flex;
    gap: var(--space-sm);
}

.input-action-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.input-action-btn:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-accent-primary);
}

.query-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--glass-border);
}

.query-mode {
    display: flex;
    gap: var(--space-sm);
}

.mode-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--glass-border);
    background: transparent;
    color: var(--color-text-secondary);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mode-btn:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-text-primary);
    background: rgba(99, 102, 241, 0.1);
}

.mode-btn.active {
    background: var(--color-accent-gradient);
    border-color: transparent;
    color: white;
}

.mode-icon {
    font-size: 0.9rem;
}

.btn-submit {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-accent-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-submit:hover::before {
    left: 100%;
}

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

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-submit:disabled::before {
    display: none;
}

.btn-submit .btn-icon {
    display: flex;
    transition: transform var(--transition-fast);
}

.btn-submit:hover .btn-icon {
    transform: translateX(4px);
}

.btn-submit .btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.btn-submit.loading .btn-text,
.btn-submit.loading .btn-icon {
    display: none;
}

.btn-submit.loading .btn-loader {
    display: block;
}

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

/* =========================================
   AI Models Section
   ========================================= */
.ai-models-section {
    margin-bottom: var(--space-3xl);
    text-align: center;
}

.ai-models-title {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.ai-models-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.ai-model-chip {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.ai-model-chip:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-2px);
}

.model-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

.model-dot.gemini {
    background: var(--color-gemini);
    box-shadow: 0 0 8px var(--color-gemini);
}

.model-dot.llama {
    background: var(--color-llama);
    box-shadow: 0 0 8px var(--color-llama);
}

.model-dot.cohere {
    background: var(--color-cohere);
    box-shadow: 0 0 8px var(--color-cohere);
}

.model-dot.mistral {
    background: var(--color-mistral);
    box-shadow: 0 0 8px var(--color-mistral);
}

.model-dot.gpt {
    background: var(--color-gpt);
    box-shadow: 0 0 8px var(--color-gpt);
}

.model-dot.gpt-premium {
    background: linear-gradient(135deg, #10a37f, #0d8a6a);
    box-shadow: 0 0 12px var(--color-gpt);
}

@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.7;
        transform: scale(0.9);
    }
}

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

.model-badge {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.model-badge.free {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.model-badge.premium {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.2));
    color: var(--color-accent-secondary);
}

/* =========================================
   Loading Section
   ========================================= */
.loading-section {
    margin-bottom: var(--space-2xl);
}

.loading-container {
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-2xl);
    border: 1px solid var(--glass-border);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-card);
}

.loading-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.loading-brain {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-md);
}

.brain-icon {
    font-size: 3rem;
    position: relative;
    z-index: 2;
    animation: brain-pulse 1.5s ease-in-out infinite;
}

@keyframes brain-pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.brain-waves {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    gap: 4px;
}

.brain-waves span {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 2px solid var(--color-accent-primary);
    opacity: 0;
    animation: wave-expand 2s ease-out infinite;
}

.brain-waves span:nth-child(1) {
    animation-delay: 0s;
}

.brain-waves span:nth-child(2) {
    animation-delay: 0.5s;
}

.brain-waves span:nth-child(3) {
    animation-delay: 1s;
}

@keyframes wave-expand {
    0% {
        width: 40px;
        height: 40px;
        opacity: 0.6;
    }

    100% {
        width: 120px;
        height: 120px;
        opacity: 0;
    }
}

.loading-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loading-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.loading-models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.loading-model-card {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    border: 1px solid var(--glass-border);
}

.model-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.model-card-header .model-icon {
    font-size: 1.2rem;
}

.model-card-header .model-name {
    flex: 1;
    font-size: 0.85rem;
    font-weight: 600;
}

.model-badge-free {
    font-size: 0.6rem;
    font-weight: 700;
    padding: 2px 5px;
    background: var(--color-success-bg);
    color: var(--color-success);
    border-radius: var(--radius-sm);
}

.model-progress {
    height: 4px;
    background: var(--color-bg-primary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-sm);
}

.progress-bar {
    height: 100%;
    border-radius: var(--radius-full);
    animation: progress-animation 2s ease-in-out infinite;
}

.progress-bar.gemini {
    background: var(--color-gemini);
}

.progress-bar.llama {
    background: var(--color-llama);
}

.progress-bar.cohere {
    background: var(--color-cohere);
}

.progress-bar.mistral {
    background: var(--color-mistral);
}

.progress-bar.gpt {
    background: var(--color-gpt);
}

@keyframes progress-animation {
    0% {
        width: 0%;
    }

    50% {
        width: 80%;
    }

    100% {
        width: 100%;
    }
}

.loading-model-card .model-state {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

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

.loading-tip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-success-bg);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-full);
    color: var(--color-success);
    font-size: 0.85rem;
}

.tip-icon {
    font-size: 1rem;
}

/* =========================================
   Result Section
   ========================================= */
.result-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 0.5s ease;
}

/* Confidence Card */
.confidence-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-2xl);
    border: 1px solid var(--glass-border);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
}

.confidence-content {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.confidence-score-container {
    text-align: center;
    flex-shrink: 0;
}

.confidence-ring {
    width: 120px;
    height: 120px;
    position: relative;
    margin-bottom: var(--space-sm);
}

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

.ring-bg {
    fill: none;
    stroke: var(--color-bg-tertiary);
    stroke-width: 10;
}

.ring-progress {
    fill: none;
    stroke: url(#scoreGradient);
    stroke-width: 10;
    stroke-linecap: round;
    stroke-dasharray: 327;
    stroke-dashoffset: 327;
    transition: stroke-dashoffset 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.confidence-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: baseline;
}

.confidence-value #confidenceScore {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.confidence-value .percent {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.confidence-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
}

.confidence-details {
    flex: 1;
}

.confidence-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.status-icon {
    font-size: 1.5rem;
}

.confidence-details h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-success);
}

.confidence-details p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    font-size: 0.95rem;
}

.ai-participants {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

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

.ai-badges {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.ai-badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
}

.ai-badge.gemini {
    background: rgba(66, 133, 244, 0.15);
    color: var(--color-gemini);
}

.ai-badge.llama {
    background: rgba(255, 107, 53, 0.15);
    color: var(--color-llama);
}

.ai-badge.cohere {
    background: rgba(139, 92, 246, 0.15);
    color: var(--color-cohere);
}

.ai-badge.mistral {
    background: rgba(255, 68, 68, 0.15);
    color: var(--color-mistral);
}

.ai-badge.gpt {
    background: rgba(16, 163, 127, 0.15);
    color: var(--color-gpt);
}

.confidence-visual {
    padding-top: var(--space-md);
    border-top: 1px solid var(--glass-border);
}

.visual-bars {
    display: flex;
    gap: var(--space-sm);
    height: 8px;
    border-radius: var(--radius-full);
    overflow: hidden;
    background: var(--color-bg-tertiary);
}

.visual-bar {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Answer Card */
.answer-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-2xl);
    border: 1px solid var(--glass-border);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
}

.answer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--glass-border);
}

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

.answer-icon {
    font-size: 1.5rem;
}

.answer-title h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.answer-actions {
    display: flex;
    gap: var(--space-sm);
}

.action-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.action-btn.copied {
    background: var(--color-success-bg);
    border-color: var(--color-success);
    color: var(--color-success);
}

.answer-content {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--color-text-primary);
}

.answer-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-accent-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.answer-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: var(--space-lg) 0 var(--space-md);
    color: var(--color-text-primary);
}

.answer-content p {
    margin-bottom: var(--space-md);
}

.answer-content strong {
    color: var(--color-accent-secondary);
    font-weight: 600;
}

.answer-content em {
    color: var(--color-text-secondary);
    font-style: normal;
    font-size: 0.9em;
}

.answer-content hr {
    border: none;
    border-top: 1px solid var(--glass-border);
    margin: var(--space-lg) 0;
}

.answer-content ul,
.answer-content ol {
    margin: var(--space-md) 0;
    padding-left: var(--space-xl);
}

.answer-content li {
    margin-bottom: var(--space-sm);
}

.answer-content code {
    font-family: var(--font-mono);
    background: var(--color-bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    color: var(--color-accent-secondary);
}

.answer-content pre {
    background: var(--color-bg-tertiary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--space-md) 0;
}

.answer-content pre code {
    background: none;
    padding: 0;
}

/* Individual Responses */
.individual-responses {
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    overflow: hidden;
}

.toggle-responses {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

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

.toggle-icon {
    display: flex;
    transition: transform var(--transition-fast);
}

.toggle-responses.open .toggle-icon {
    transform: rotate(180deg);
}

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

.responses-container {
    border-top: 1px solid var(--glass-border);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.response-item {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-fast);
}

.response-item:hover {
    border-color: var(--color-accent-primary);
}

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

.response-model {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    font-size: 0.95rem;
}

.response-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.response-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Differences Card */
.differences-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    padding: var(--space-lg);
}

.differences-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.differences-icon {
    font-size: 1.2rem;
}

.differences-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.differences-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.difference-item {
    padding: var(--space-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    border-left: 3px solid var(--color-warning);
}

/* New Question Button */
.btn-new-question {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-xl);
    color: var(--color-text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

.btn-new-question:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.btn-new-question .btn-icon {
    display: flex;
}

/* =========================================
   Suggestions Section
   ========================================= */
.suggestions-section {
    margin-bottom: var(--space-3xl);
}

.suggestions-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
}

.title-icon {
    font-size: 1.2rem;
}

.suggestions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.suggestion-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
    font-family: var(--font-primary);
}

.suggestion-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.suggestion-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.suggestion-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.suggestion-text {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text-primary);
}

.suggestion-category {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.suggestion-arrow {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.suggestion-card:hover .suggestion-arrow {
    color: var(--color-accent-primary);
    transform: translateX(4px);
}

/* =========================================
   Footer
   ========================================= */
.footer {
    margin-top: auto;
    padding: var(--space-2xl) var(--space-lg);
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 700;
}

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

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent-primary);
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

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

/* =========================================
   Responsive Design
   ========================================= */
@media (max-width: 768px) {
    .header {
        padding: var(--space-md);
        flex-wrap: wrap;
        gap: var(--space-md);
    }

    .nav-links {
        display: none;
    }

    .logo-tagline {
        display: none;
    }

    .main-content {
        padding: var(--space-xl) var(--space-md);
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
        padding: var(--space-lg);
    }

    .stat-divider {
        width: 60px;
        height: 1px;
    }

    .query-footer {
        flex-direction: column;
    }

    .query-mode {
        width: 100%;
        justify-content: center;
    }

    .btn-submit {
        width: 100%;
        justify-content: center;
    }

    .confidence-content {
        flex-direction: column;
        text-align: center;
    }

    .ai-participants {
        justify-content: center;
    }

    .answer-header {
        flex-direction: column;
        gap: var(--space-md);
        align-items: flex-start;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .mode-btn .mode-text {
        display: none;
    }

    .mode-btn {
        padding: var(--space-sm);
    }

    .mode-icon {
        font-size: 1.1rem;
    }

    .loading-models-grid {
        grid-template-columns: 1fr;
    }

    .ai-models-grid {
        flex-direction: column;
        align-items: center;
    }

    .btn-premium .premium-text {
        display: none;
    }
}

/* =========================================
   Mode Indicator (Free/Premium)
   ========================================= */
.mode-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-success-bg);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-success);
}

.mode-indicator.premium {
    background: rgba(139, 92, 246, 0.15);
    border-color: rgba(139, 92, 246, 0.3);
    color: var(--color-accent-secondary);
}

.mode-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

.mode-dot.free {
    background: var(--color-success);
    box-shadow: 0 0 8px var(--color-success);
}

.mode-dot.premium {
    background: var(--color-accent-secondary);
    box-shadow: 0 0 8px var(--color-accent-secondary);
}

@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* =========================================
   Modal Styles
   ========================================= */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 1;
    transition: opacity var(--transition-normal);
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    background: var(--color-bg-card-solid);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transform: scale(1);
    transition: transform var(--transition-normal);
}

.modal-overlay.hidden .modal-content {
    transform: scale(0.9);
}

.modal-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
    display: block;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.modal-desc {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

.modal-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-2xl);
    background: var(--color-accent-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-width: 120px;
}

.modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-sm);
}

/* Premium Modal */
.premium-modal {
    max-width: 450px;
}

.premium-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    text-align: left;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.feature-icon {
    font-size: 1.3rem;
}

.coming-soon-text {
    font-size: 0.9rem;
    color: var(--color-accent-secondary);
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

/* Responsive Modal */
@media (max-width: 480px) {
    .modal-content {
        padding: var(--space-xl);
        margin: var(--space-md);
    }

    .modal-icon {
        font-size: 3rem;
    }

    .modal-title {
        font-size: 1.25rem;
    }

    .mode-indicator .mode-label {
        display: none;
    }
}