/* WeRAI/HumAIna - Canadian Red/White/Gold Theme */
:root {
    --canada-red: #FF0000;
    --canada-white: #FFFFFF;
    --canada-gold: #FFD700;
    --dark-bg: #0a0a0a;
    --card-bg: rgba(20, 20, 20, 0.95);
    --glow-gold: rgba(255, 215, 0, 0.4);
    --glow-red: rgba(255, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark-bg);
    color: var(--canada-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Particles Background */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
}

/* Snow Animation */
.snowflake {
    position: fixed;
    top: -10px;
    z-index: 2;
    color: var(--canada-white);
    font-size: 1em;
    font-family: Arial, sans-serif;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.8);
    animation: fall linear infinite;
    user-select: none;
    pointer-events: none;
}

@keyframes fall {
    to {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

/* Content Layer */
.content {
    position: relative;
    z-index: 10;
    min-height: 100vh;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--canada-gold);
    padding: 1rem 0;
    z-index: 100;
    box-shadow: 0 2px 20px var(--glow-gold);
}

nav .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--canada-red), var(--canada-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px var(--glow-gold);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--canada-white);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

nav a:hover {
    color: var(--canada-gold);
    background: rgba(255, 215, 0, 0.1);
    text-shadow: 0 0 10px var(--glow-gold);
}

/* Hero Section */
.hero {
    padding: 150px 2rem 100px;
    text-align: center;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--canada-red), var(--canada-gold), var(--canada-white));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.3); }
}

.hero .subtitle {
    font-size: 1.5rem;
    color: var(--canada-gold);
    margin-bottom: 2rem;
    text-shadow: 0 0 20px var(--glow-gold);
}

.patent-badge {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.2), rgba(255, 215, 0, 0.2));
    border: 2px solid var(--canada-gold);
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--canada-gold);
    box-shadow: 0 0 30px var(--glow-gold), inset 0 0 20px var(--glow-red);
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 30px var(--glow-gold), inset 0 0 20px var(--glow-red);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 50px var(--glow-gold), inset 0 0 30px var(--glow-red);
        transform: scale(1.05);
    }
}

/* Sections */
section {
    padding: 80px 2rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--canada-red), var(--canada-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.card {
    background: var(--card-bg);
    border: 2px solid var(--canada-gold);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.2);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px var(--glow-gold);
    border-color: var(--canada-red);
}

.card h3 {
    font-size: 1.8rem;
    color: var(--canada-gold);
    margin-bottom: 1rem;
}

.card .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--canada-red), var(--canada-gold));
    color: var(--canada-white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    transition: all 0.3s;
    border: 2px solid transparent;
    box-shadow: 0 0 20px var(--glow-gold);
}

.btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 40px var(--glow-gold);
    border-color: var(--canada-white);
}

/* Stats Bar */
.stats {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 3rem 0;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--canada-gold);
    text-shadow: 0 0 20px var(--glow-gold);
}

.stat-label {
    font-size: 1.1rem;
    color: var(--canada-white);
    margin-top: 0.5rem;
}

/* Footer */
footer {
    background: rgba(10, 10, 10, 0.98);
    border-top: 2px solid var(--canada-gold);
    padding: 3rem 2rem;
    text-align: center;
    margin-top: 5rem;
}

footer p {
    color: var(--canada-gold);
    margin: 0.5rem 0;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
}