/* ==========================================================================
   KK4WMI - Radio Polish (Aura Theme)
   Modern Technical Aesthetic for Amateur Radio
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
    /* Aura Color System */
    --aura-navy: #020617;
    --aura-slate: #0f172a;
    --aura-cyan: #22d3ee;
    --aura-cyan-glow: rgba(34, 211, 238, 0.3);
    --aura-magenta: #ff61d8;
    --aura-lime: #a3e635;
    --aura-glass: rgba(255, 255, 255, 0.03);
    --aura-border: rgba(255, 255, 255, 0.08);
    
    /* Global Overrides */
    --bg: var(--aura-navy);
    --surface: var(--aura-slate);
    --surface-2: #1e293b;
    --fg: #f1f5f9;
    --primary: var(--aura-cyan);
    --accent: var(--aura-magenta);
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius: 16px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--aura-navy);
    color: var(--fg);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Background Aura */
body::before {
    content: '';
    position: fixed;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(34, 211, 238, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255, 97, 216, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(163, 230, 53, 0.03) 0%, transparent 50%);
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    height: 90px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--aura-border);
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand h1 {
    font-size: 1.1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--aura-cyan);
}

.brand img {
    height: 40px;
    width: auto;
    border-radius: 8px;
    box-shadow: 0 0 20px var(--aura-cyan-glow);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--aura-border);
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--aura-cyan);
    color: var(--aura-navy);
    border-color: transparent;
    box-shadow: 0 8px 20px var(--aura-cyan-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px var(--aura-cyan-glow);
    background: #5eead4;
}

.btn-secondary {
    background: var(--aura-glass);
    color: var(--fg);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--aura-cyan);
}

/* Hero Section */
.hero-wrap {
    padding: 120px 0 80px;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 5rem;
    align-items: center;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.hero-title span {
    display: block;
    background: linear-gradient(to right, var(--aura-cyan), #99f6e4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: #94a3b8;
    margin-bottom: 3rem;
    max-width: 550px;
}

.hero-image-box {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--aura-border);
    box-shadow: 0 40px 100px rgba(0,0,0,0.6);
}

.hero-image-box img {
    width: 100%;
    display: block;
    filter: contrast(1.1) brightness(0.9);
}

/* Cards */
.card {
    background: var(--aura-glass);
    border: 1px solid var(--aura-border);
    border-radius: 20px;
    padding: 2.5rem;
    transition: var(--transition);
}

.card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--aura-cyan);
    transform: translateY(-5px);
}

.class-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.class-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.class-card p {
    color: #94a3b8;
    font-size: 0.95rem;
    margin-bottom: 2rem;
    flex-grow: 1;
}

/* Pills */
.pill {
    padding: 0.5rem 1rem;
    border-radius: 99px;
    background: rgba(34, 211, 238, 0.05);
    border: 1px solid rgba(34, 211, 238, 0.2);
    color: var(--aura-cyan);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-ctas { justify-content: center; }
    .grid.cols-3 { grid-template-columns: 1fr; }
}