:root {
    --bg-color: #0d1117;
    --card-bg: rgba(30, 41, 59, 0.45);
    --card-border: rgba(255, 255, 255, 0.1);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --primary-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --accent-gradient: linear-gradient(135deg, #10b981, #06b6d4);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 10% 20%, #1e1b4b 0%, #0d1117 80%);
    z-index: -2;
}

.glow-container {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 1px;
    height: 1px;
    background: transparent;
    z-index: -1;
}

.glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    pointer-events: none;
    transition: transform 0.5s ease-out;
}

.glow-1 {
    background: #3b82f6;
    top: -300px;
    left: -400px;
}

.glow-2 {
    background: #8b5cf6;
    top: 0px;
    left: 100px;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
}

/* Glassmorphism utility */
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    border-radius: 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.5));
}

.logo-text h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.status {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pulse {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 0 rgba(16, 185, 129, 0.4);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.header-info {
    display: flex;
    gap: 1rem;
}

.info-pill {
    padding: 0.5rem 1rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.info-pill.highlight {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
}

.hero {
    padding: 3rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.interactive:hover {
    box-shadow: var(--card-shadow);
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.3);
}

.security-card {
    padding: 2rem;
    text-align: center;
    margin-bottom: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.lock-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 0 15px rgba(245, 158, 11, 0.3));
}

.security-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.security-card p {
    color: var(--text-secondary);
    max-width: 600px;
    font-size: 1rem;
}

.auth-specs {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.spec {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #60a5fa;
    background: rgba(59, 130, 246, 0.1);
    padding: 0.4rem 1rem;
    border-radius: 6px;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

code {
    color: #e2e8f0;
    background: rgba(0, 0, 0, 0.2);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9em;
}

.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    padding: 2rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Animations */
.fade-in {
    animation: fadeIn 1s ease-out;
}

.fade-up {
    animation: fadeUp 0.8s ease-out forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-up[style*="--delay: 1"] { animation-delay: 0.1s; }

/* Mobile optimization */
@media (max-width: 768px) {
    .header { flex-direction: column; gap: 2rem; align-items: flex-start; }
    .hero h2 { font-size: 1.75rem; }
    .container { padding: 1.5rem; }
}