/*
Theme Name: SystemEL
Theme URI: https://ada.absurd.one
Author: SystemEL
Author URI: https://systemel.pl
Description: Premium theme for Altium Designer training courses. Dark, prestigious, digitally advanced.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: systemel
Tags: custom, dark, training, pcb, altium
*/

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #1f1f35;
    --accent-blue: #00d4ff;
    --accent-gold: #c9a84c;
    --accent-gold-light: #e0c472;
    --text-primary: #e8e8f0;
    --text-secondary: #a0a0b8;
    --text-muted: #6a6a82;
    --border-color: #2a2a3e;
    --gradient-hero: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0a0a0f 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-blue), var(--accent-gold));
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-blue); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-gold); }
img { max-width: 100%; height: auto; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}
.navbar.scrolled { background: rgba(10, 10, 15, 0.95); box-shadow: var(--shadow-card); }
.navbar .container {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
}
.navbar-brand {
    font-size: 1.5rem; font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.navbar-brand span { font-weight: 300; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
    color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
    position: relative; transition: color var(--transition-fast);
}
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 2px; background: var(--accent-blue);
    transition: width var(--transition-normal);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
    padding: 10px 24px; border-radius: 8px;
    background: var(--gradient-accent); color: var(--bg-primary);
    font-weight: 600; font-size: 0.9rem;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); color: var(--bg-primary); }

.hero {
    min-height: 100vh; display: flex; align-items: center;
    background: var(--gradient-hero);
    position: relative; overflow: hidden;
    padding-top: 72px;
}
.hero::before {
    content: ''; position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2300d4ff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}
#particles-canvas { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 800px; margin: 0 auto; }
.hero-badge {
    display: inline-block; padding: 6px 16px; border-radius: 20px;
    background: rgba(0, 212, 255, 0.1); border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--accent-blue); font-size: 0.85rem; font-weight: 500;
    margin-bottom: 24px;
}
.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 800;
    line-height: 1.1; margin-bottom: 24px;
}
.hero h1 .gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 1.2rem; color: var(--text-secondary);
    max-width: 600px; margin: 0 auto 40px;
}
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px; border-radius: 10px; font-weight: 600;
    font-size: 1rem; transition: all var(--transition-normal);
    cursor: pointer; border: none;
}
.btn-primary {
    background: var(--gradient-accent); color: var(--bg-primary);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4); color: var(--bg-primary); }
.btn-secondary {
    background: transparent; color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover { border-color: var(--accent-blue); color: var(--accent-blue); }

.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-header h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; margin-bottom: 16px; }
.section-header p { color: var(--text-secondary); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }
.section-label {
    display: inline-block; padding: 4px 12px; border-radius: 6px;
    background: rgba(201, 168, 76, 0.1); border: 1px solid rgba(201, 168, 76, 0.3);
    color: var(--accent-gold); font-size: 0.8rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px;
}

.courses-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.course-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 16px; padding: 32px;
    transition: all var(--transition-normal);
    position: relative; overflow: hidden;
}
.course-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: var(--gradient-accent);
    transform: scaleX(0); transition: transform var(--transition-normal);
    transform-origin: left;
}
.course-card:hover { transform: translateY(-8px); border-color: rgba(0, 212, 255, 0.3); box-shadow: var(--shadow-glow); }
.course-card:hover::before { transform: scaleX(1); }
.course-card.featured { border-color: var(--accent-gold); }
.course-card.featured::before { transform: scaleX(1); background: var(--accent-gold); }
.course-badge {
    display: inline-block; padding: 4px 10px; border-radius: 6px;
    font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
    margin-bottom: 16px;
}
.course-badge.popular { background: rgba(201, 168, 76, 0.15); color: var(--accent-gold); }
.course-badge.standard { background: rgba(0, 212, 255, 0.1); color: var(--accent-blue); }
.course-badge.advanced { background: rgba(168, 85, 247, 0.15); color: #a855f7; }
.course-card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; }
.course-duration { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; }
.course-price { font-size: 2rem; font-weight: 800; margin-bottom: 24px; color: var(--accent-blue); }
.course-price span { font-size: 0.9rem; font-weight: 400; color: var(--text-muted); }
.course-topics { list-style: none; margin-bottom: 24px; }
.course-topics li {
    padding: 8px 0; border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary); font-size: 0.9rem;
    display: flex; align-items: flex-start; gap: 8px;
}
.course-topics li:last-child { border-bottom: none; }
.course-topics li::before { content: '\25B9'; color: var(--accent-blue); flex-shrink: 0; }
.course-card .btn { width: 100%; justify-content: center; }

.discounts-section { background: var(--bg-secondary); border-radius: 20px; padding: 48px; margin-top: 48px; }
.discounts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.discount-item {
    text-align: center; padding: 24px 16px; border-radius: 12px;
    background: var(--bg-card); border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}
.discount-item:hover { border-color: var(--accent-gold); transform: scale(1.05); }
.discount-number { font-size: 2rem; font-weight: 800; color: var(--accent-gold); }
.discount-label { color: var(--text-secondary); font-size: 0.85rem; margin-top: 4px; }

.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.feature-card {
    padding: 32px; border-radius: 16px;
    background: var(--bg-card); border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}
.feature-card:hover { border-color: rgba(0, 212, 255, 0.3); }
.feature-icon {
    width: 48px; height: 48px; border-radius: 12px;
    background: rgba(0, 212, 255, 0.1); display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin-bottom: 16px;
}
.feature-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; }
.feature-card p { color: var(--text-secondary); font-size: 0.95rem; }

.order-section { background: var(--bg-secondary); border-radius: 20px; padding: 48px; max-width: 700px; margin: 0 auto; }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 500; color: var(--text-secondary); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 12px 16px; border-radius: 10px;
    background: var(--bg-card); border: 1px solid var(--border-color);
    color: var(--text-primary); font-size: 1rem;
    transition: border-color var(--transition-fast);
    font-family: var(--font-primary);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}
.form-group select option { background: var(--bg-card); color: var(--text-primary); }
.price-summary {
    padding: 28px; border-radius: 16px;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.8), rgba(18, 18, 26, 0.9));
    border: 1px solid rgba(0, 212, 255, 0.2);
    margin-bottom: 24px;
    box-shadow: var(--shadow-card);
}
.price-summary h3 {
    margin-bottom: 20px;
    color: var(--accent-gold);
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.price-row { display: flex; justify-content: space-between; padding: 10px 0; color: var(--text-secondary); font-size: 0.95rem; border-bottom: 1px solid var(--border-color); }
.price-row:last-child { border-bottom: none; }
.price-row span:last-child { text-align: right; color: var(--text-primary); }
.price-row.total {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    border-top: 2px solid var(--accent-blue);
    padding-top: 18px;
    margin-top: 12px;
}
.price-row.total span:last-child { color: var(--accent-blue); }
.discount-badge { color: var(--accent-gold); font-weight: 700; background: rgba(201, 168, 76, 0.1); padding: 2px 8px; border-radius: 6px; }

.footer { background: var(--bg-secondary); border-top: 1px solid var(--border-color); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 48px; margin-bottom: 48px; }
.footer h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 16px; color: var(--accent-gold); }
.footer p, .footer a { color: var(--text-secondary); font-size: 0.95rem; }
.footer a:hover { color: var(--accent-blue); }
.footer-contact p { margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.footer-bottom {
    text-align: center; padding-top: 32px; border-top: 1px solid var(--border-color);
    color: var(--text-muted); font-size: 0.85rem;
}

.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 2rem; }
    .section { padding: 64px 0; }
    .courses-grid { grid-template-columns: 1fr; }
    .discounts-section, .order-section { padding: 24px; }
}
.admin-bar .navbar { top: 32px; }
.admin-bar .hero { padding-top: 104px; }
@media (max-width: 782px) { .admin-bar .navbar { top: 46px; } .admin-bar .hero { padding-top: 118px; } }