/* 
   TokenScience.org CSS Design System
   Aesthetic: Decentralized Citizen Science (Futuristic Dark Theme)
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Color Palette */
    --bg-primary: #07090e;
    --bg-secondary: #0d111b;
    --bg-tertiary: #141b2b;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-glow: rgba(0, 242, 254, 0.2);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-cyan: #00f2fe;
    --color-cyan-rgb: 0, 242, 254;
    --color-violet: #9d4edd;
    --color-violet-rgb: 157, 78, 221;
    --color-emerald: #10b981;
    --color-pink: #f72585;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-display: 'Outfit', sans-serif;
    
    /* Transitions & Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #ffffff;
}

a {
    color: var(--color-cyan);
    text-decoration: none;
    transition: var(--transition-smooth);
}

a:hover {
    color: #ffffff;
    text-shadow: 0 0 8px rgba(var(--color-cyan-rgb), 0.5);
}

/* Gradients & Glows */
.text-gradient {
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-violet) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-cyan {
    background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bg-gradient-radial {
    background: radial-gradient(circle at 50% 50%, rgba(var(--color-cyan-rgb), 0.08) 0%, transparent 60%);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--color-cyan-rgb), 0.3);
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.grid {
    display: grid;
    gap: 2rem;
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
}

/* App Header & Navbar */
.app-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(var(--bg-primary), 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    transition: var(--transition-smooth);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: #ffffff;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-violet) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--bg-primary);
    text-shadow: none;
    box-shadow: 0 0 15px rgba(var(--color-cyan-rgb), 0.4);
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.nav-link:hover {
    color: #ffffff;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-violet) 100%);
    color: var(--bg-primary);
    box-shadow: 0 4px 20px rgba(var(--color-cyan-rgb), 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(var(--color-cyan-rgb), 0.45);
    color: var(--bg-primary);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Glassmorphism Cards */
.glass-card {
    background: rgba(15, 20, 35, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(var(--color-cyan-rgb), 0.05) 0%, rgba(var(--color-violet-rgb), 0.05) 100%);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 0;
    pointer-events: none;
}

.glass-card:hover {
    border-color: var(--border-color-glow);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(var(--color-cyan-rgb), 0.05);
}

.glass-card:hover::before {
    opacity: 1;
}

.glass-card > * {
    position: relative;
    z-index: 1;
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 8rem 0 6rem;
    background-image: radial-gradient(circle at 10% 20%, rgba(var(--color-cyan-rgb), 0.05) 0%, transparent 50%),
                      radial-gradient(circle at 90% 80%, rgba(var(--color-violet-rgb), 0.05) 0%, transparent 50%);
    text-align: center;
    overflow: hidden;
}

.hero-tag {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: rgba(var(--color-cyan-rgb), 0.1);
    border: 1px solid rgba(var(--color-cyan-rgb), 0.25);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-cyan);
    margin-bottom: 2rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* Calculator Section */
.calc-section {
    padding: 4rem 0;
}

.calc-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: center;
}

@media (max-width: 992px) {
    .calc-grid {
        grid-template-columns: 1fr;
    }
}

.calc-title {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.calc-desc {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.calculator-card {
    background: rgba(13, 17, 27, 0.8);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.form-group {
    margin-bottom: 2rem;
}

.form-label {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    color: #ffffff;
}

.form-label span.value-highlight {
    color: var(--color-cyan);
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
}

/* LLM Select Grid */
.provider-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.provider-option {
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: var(--radius-sm);
    text-align: center;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition-smooth);
    color: var(--text-secondary);
}

.provider-option:hover {
    border-color: rgba(var(--color-cyan-rgb), 0.5);
    color: #ffffff;
}

.provider-option.selected {
    background: rgba(var(--color-cyan-rgb), 0.1);
    border-color: var(--color-cyan);
    color: #ffffff;
    box-shadow: 0 0 15px rgba(var(--color-cyan-rgb), 0.15);
}

/* Custom Slider */
.slider-input {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-tertiary);
    outline: none;
    margin-top: 0.5rem;
}

.slider-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-cyan);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(var(--color-cyan-rgb), 0.8);
    transition: var(--transition-smooth);
}

.slider-input::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Output Cards */
.results-card {
    background: linear-gradient(135deg, rgba(var(--color-cyan-rgb), 0.05) 0%, rgba(var(--color-violet-rgb), 0.05) 100%);
    border: 1px solid var(--border-color-glow);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.results-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 1rem;
}

.results-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.result-item {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.result-icon {
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.result-details {
    display: flex;
    flex-direction: column;
}

.result-val {
    font-size: 1.5rem;
    font-family: var(--font-display);
    font-weight: 800;
    color: #ffffff;
}

.result-lbl {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Pillars Section */
.pillars-section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-tag {
    color: var(--color-violet);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    display: block;
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.pillar-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-violet) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.pillar-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.pillar-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.pillar-meta {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.badge {
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.badge-accent {
    border-color: rgba(var(--color-cyan-rgb), 0.3);
    color: var(--color-cyan);
}

/* Ingestion Pipeline Diagram */
.pipeline-section {
    padding: 6rem 0;
    background: linear-gradient(180deg, transparent 0%, var(--bg-secondary) 50%, transparent 100%);
}

.pipeline-flow {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.5rem;
    margin-top: 4rem;
    position: relative;
}

.pipeline-flow::after {
    content: '';
    position: absolute;
    top: 50px;
    left: 10%;
    width: 80%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-cyan) 0%, var(--color-violet) 100%);
    opacity: 0.2;
    z-index: 0;
}

@media (max-width: 768px) {
    .pipeline-flow {
        flex-direction: column;
        align-items: center;
        gap: 3rem;
    }
    .pipeline-flow::after {
        display: none;
    }
}

.pipeline-step {
    flex: 1;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-num {
    width: 36px;
    height: 36px;
    background: var(--bg-primary);
    border: 2px solid var(--color-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: -38px auto 1.5rem;
    font-weight: bold;
    color: var(--color-cyan);
    box-shadow: 0 0 10px rgba(var(--color-cyan-rgb), 0.3);
}

.pipeline-step:nth-child(even) .step-num {
    border-color: var(--color-violet);
    color: var(--color-violet);
    box-shadow: 0 0 10px rgba(var(--color-violet-rgb), 0.3);
}

.step-title {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

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

/* Waitlist Section */
.waitlist-section {
    padding: 6rem 0;
    text-align: center;
}

.waitlist-card {
    max-width: 650px;
    margin: 0 auto;
    background: radial-gradient(circle at top right, rgba(var(--color-violet-rgb), 0.1), transparent),
                rgba(15, 20, 35, 0.6);
    border-color: rgba(255, 255, 255, 0.1);
}

.waitlist-desc {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.waitlist-form {
    display: flex;
    gap: 0.75rem;
}

@media (max-width: 576px) {
    .waitlist-form {
        flex-direction: column;
    }
}

.form-input {
    flex: 1;
    background: rgba(7, 9, 14, 0.8);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-cyan);
    box-shadow: 0 0 10px rgba(var(--color-cyan-rgb), 0.2);
}

/* Notification Messages */
.form-message {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    display: none;
    text-align: left;
}

.form-message.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--color-emerald);
    color: var(--color-emerald);
}

.form-message.error {
    display: block;
    background: rgba(247, 37, 133, 0.1);
    border: 1px solid var(--color-pink);
    color: var(--color-pink);
}

/* App Footer */
.app-footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    padding: 4rem 0 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 0.8fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.footer-brand h4 {
    color: #ffffff;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.footer-links-col h5 {
    color: #ffffff;
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link {
    color: var(--text-secondary);
}

.footer-link:hover {
    color: #ffffff;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

@media (max-width: 576px) {
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}