/* U-Turn Guardians - Cyber Safety Theme */

/* Font import removed - using HTML link for performance */

:root {
    /* Theme 1: Cyber-Safety (Default) */
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-red: #ef4444;
    --accent-green: #22c55e;
    --accent-blue: #3b82f6;
    --border-color: #334155;
    --glass-bg: rgba(30, 41, 59, 0.7);

    /* Theme 2: Midnight Neon (Uncomment to use) */
    /*
    --bg-color: #000000;
    --card-bg: #111111;
    --text-primary: #ffffff;
    --text-secondary: #a3a3a3;
    --accent-red: #ff00ff;
    --accent-green: #00ffff;
    --accent-blue: #7d00f7;
    --border-color: #333333;
    --glass-bg: rgba(20, 20, 20, 0.8);
    */

    /* Theme 3: Industrial Amber (Uncomment to use) */
    /*
    --bg-color: #1c1917;
    --card-bg: #292524;
    --text-primary: #fafaf9;
    --text-secondary: #a8a29e;
    --accent-red: #f59e0b;
    --accent-green: #84cc16;
    --accent-blue: #f59e0b;
    --border-color: #44403c;
    --glass-bg: rgba(41, 37, 36, 0.8);
    */
}

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

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

/* Typography */
h1,
h2,
h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    font-family: 'Space Grotesk', sans-serif;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

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

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

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

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

/* Navigation - Floating Glass Pill */
nav {
    position: fixed;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    padding: 1rem 2rem;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    z-index: 1000;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

nav .container {
    padding: 0;
    max-width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
}

/* Hero Section - Split Layout & Grid */
.hero {
    min-height: 100vh;
    padding-top: 8rem;
    /* Space for fixed nav */
    display: flex;
    align-items: center;
    position: relative;
    background-color: var(--bg-color);
    background-image:
        linear-gradient(rgba(30, 41, 59, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(30, 41, 59, 0.3) 1px, transparent 1px);
    background-size: 50px 50px;
    overflow: hidden;
}

.hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, var(--bg-color) 80%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
    z-index: 2;
}

.hero-content {
    text-align: left;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.pulsing-icon {
    font-size: 15rem;
    color: var(--accent-red);
    filter: drop-shadow(0 0 20px rgba(239, 68, 68, 0.5));
    animation: pulse 3s infinite ease-in-out;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        filter: drop-shadow(0 0 20px rgba(239, 68, 68, 0.5));
        color: var(--accent-red);
    }

    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 40px rgba(239, 68, 68, 0.8));
        color: var(--accent-green);
    }
}

@media (max-width: 900px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        text-align: center;
        order: 2;
    }

    .hero-visual {
        order: 1;
        margin-bottom: 2rem;
    }

    nav {
        top: 0;
        left: 0;
        transform: none;
        width: 100%;
        border-radius: 0;
        border: none;
        border-bottom: 1px solid var(--border-color);
    }
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: var(--text-primary);
    color: var(--bg-color);
    font-weight: 600;
    border-radius: 4px;
    transition: transform 0.2s, background 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    background: #e2e8f0;
}

/* Features Grid */
.features {
    padding: 6rem 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 8px;
    transition: transform 0.3s, border-color 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
}

/* Architecture Section */
.architecture {
    padding: 6rem 0;
    background: #111827;
}

.diagram-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 300px;
    overflow-x: auto;
}

.diagram-content {
    width: 100%;
    display: flex;
    justify-content: center;
}

/* Problem & Solution */
.problem-solution {
    padding: 6rem 0;
}

.split-layout {
    display: flex;
    gap: 4rem;
    flex-wrap: wrap;
}

.text-content {
    flex: 1;
    min-width: 300px;
}

.stat-card {
    background: rgba(30, 41, 59, 0.4);
    border-left: 4px solid var(--accent-red);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 0 8px 8px 0;
}

.stat-card.border-green {
    border-left-color: var(--accent-green);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.5rem;
}

/* Tech Stack */
.tech-stack {
    padding: 6rem 0;
    background: #111827;
}

.stack-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 8px;
}

.stack-card ul {
    list-style: none;
    padding: 0;
    color: var(--text-secondary);
}

.stack-card li {
    margin-bottom: 0.5rem;
    padding-left: 1.2rem;
    position: relative;
}

.stack-card li::before {
    content: "›";
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: bold;
}

/* Use Cases */
.use-cases {
    padding: 6rem 0;
}

/* Circuit Views */
.circuit {
    padding: 6rem 0;
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn.active {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

/* Carousel */
.carousel-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 12px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

.carousel-slide {
    display: none;
    text-align: center;
    padding: 2rem;
    animation: fadeEffect 0.5s;
}

.carousel-slide.active {
    display: block;
}

@keyframes fadeEffect {
    from {
        opacity: 0.4;
    }

    to {
        opacity: 1;
    }
}

.carousel-slide img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.caption {
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    padding: 1rem;
    cursor: pointer;
    border-radius: 50%;
    font-size: 1.2rem;
    transition: background 0.3s;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    background-color: var(--accent-blue);
}

.prev {
    left: 10px;
}

.next {
    right: 10px;
}

.carousel-dots {
    text-align: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
}

.dot-indicator {
    cursor: pointer;
    height: 10px;
    width: 10px;
    margin: 0 4px;
    background-color: #555;
    border-radius: 50%;
    display: inline-block;
    transition: background-color 0.3s ease;
}

.dot-indicator.active,
.dot-indicator:hover {
    background-color: var(--text-primary);
}

/* Footer */
footer {
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.social-links a {
    font-size: 1.5rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }
}



/* Animations & Effects */
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

/* Contributors Section */
.team {
    padding: 6rem 0;
}

.contributor-card {
    text-align: center;
    padding: 3rem 2rem;
    position: relative;
    overflow: hidden;
}

.contributor-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
}

.profile-img-container {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    padding: 4px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
}

.profile-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--card-bg);
}

.social-mini a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: color 0.3s;
}

.social-mini a:hover {
    color: var(--accent-blue);
}

/* Expanded Problem Styles */
.lead-text {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 300;
}

.problem-block {
    margin-bottom: 2rem;
}

.problem-block h3 {
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

/* Code Logic Section */
.code-logic {
    padding: 6rem 0;
}

.top-align {
    align-items: flex-start;
}

/* Mac Window Style */
.mac-window {
    flex: 1;
    background: #0d1117;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    overflow: hidden;
    min-width: 300px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

.mac-header {
    background: #161b22;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    height: 44px;
}

.mac-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.red {
    background: #ff5f56;
}

.yellow {
    background: #ffbd2e;
}

.green {
    background: #27c93f;
}

.mac-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
}

.code-content {
    padding: 1.5rem;
    overflow-x: auto;
    color: #e6edf3;
    font-size: 0.9rem;
    line-height: 1.5;
}

.code-content pre {
    margin: 0;
}

/* Logic Cards */
.logic-cards {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.logic-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(4px);
    transition: transform 0.2s ease, border-color 0.2s;
}

.logic-card:hover {
    transform: translateX(10px) translateY(0);
}

.status-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.bg-red-glow {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.bg-green-glow {
    background: rgba(34, 197, 94, 0.1);
    color: var(--accent-green);
    box-shadow: 0 0 15px rgba(34, 197, 94, 0.2);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.logic-card h3 {
    margin-bottom: 0.25rem;
    text-align: left;
    font-size: 1.1rem;
}

.logic-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.4;
}