/* noapte.css */
:root {
    --bg-deep: #090B19;
    --bg-soft: #1E2240;
    --text-core: #E5E7EB;
    --text-muted: #9CA3AF;
    --accent: #FDE047; /* starlight yellow */
    --accent-glow: rgba(253, 224, 71, 0.2);
    --border: rgba(255, 255, 255, 0.08);
}

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

body {
    background-color: var(--bg-deep);
    color: var(--text-core);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(30, 34, 64, 0.5), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(30, 34, 64, 0.5), transparent 25%);
    min-height: 100vh;
}

/* Star field */
.stars {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -1; pointer-events: none;
    background-image: 
        radial-gradient(1px 1px at 10% 20%, white, transparent),
        radial-gradient(1.5px 1.5px at 30% 40%, white, transparent),
        radial-gradient(1px 1px at 60% 10%, white, transparent),
        radial-gradient(2px 2px at 80% 60%, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 40% 80%, white, transparent),
        radial-gradient(1.5px 1.5px at 90% 90%, white, transparent);
    background-size: 200px 200px;
    opacity: 0.15;
    animation: twinkle 15s linear infinite alternate;
}
@keyframes twinkle {
    0% { opacity: 0.1; }
    100% { opacity: 0.4; }
}

/* Layout Framework */
.container {
    max-width: 900px; margin: 0 auto; padding: 4rem 2rem;
    display: flex; flex-direction: column; justify-content: center; min-height: 100vh;
}

.label {
    text-transform: uppercase; letter-spacing: 2px; font-weight: 600; font-size: 0.75rem;
    color: var(--accent); margin-bottom: 2rem; display: block; text-shadow: 0 0 10px var(--accent-glow);
}

.huge-title {
    font-size: 4rem; font-weight: 800; line-height: 1.1; margin-bottom: 2rem;
    letter-spacing: -0.03em;
}

.subtitle {
    font-size: 1.5rem; color: var(--text-muted); font-weight: 300; margin-bottom: 4rem;
}

/* Glass Cards */
.card-grid {
    display: grid; grid-template-columns: 1fr; gap: 2rem; margin-top: 2rem;
}
@media(min-width: 768px){ .card-grid { grid-template-columns: 1fr 1fr; } }

.glass-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    border-radius: 20px; padding: 2.5rem;
    transition: transform 0.4s ease, border-color 0.4s ease;
}
.glass-card:hover {
    transform: translateY(-5px); border-color: rgba(255,255,255,0.15);
}
.glass-card h3 {
    font-size: 1.25rem; font-weight: 600; margin-bottom: 1rem; color: #fff;
    display: flex; align-items: center; gap: 10px;
}
.glass-card p {
    color: var(--text-muted); font-weight: 300; font-size: 1rem;
}

/* Navigation Links */
.nav-row {
    display: flex; justify-content: space-between; margin-top: 5rem;
    border-top: 1px solid var(--border); padding-top: 3rem; align-items: center;
}
.btn {
    text-decoration: none; color: #fff; padding: 1rem 2rem; border-radius: 50px;
    background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border);
    transition: all 0.3s ease; font-weight: 500; font-size: 0.9rem;
    display: inline-flex; align-items: center; gap: 8px;
}
.btn.primary {
    background: var(--text-core); color: var(--bg-deep); border-color: var(--text-core);
}
.btn:hover {
    background: var(--text-core); color: var(--bg-deep);
}
.btn.primary:hover {
    background: transparent; color: var(--text-core);
}

/* UI Helpers */
.reveal {
    opacity: 0; transform: translateY(20px); transition: opacity 1s ease, transform 1s ease;
}
.reveal.is-visible {
    opacity: 1; transform: translateY(0);
}
.delay-1 { transition-delay: 0.1s; } .delay-2 { transition-delay: 0.2s; }

/* Chapter specific */
.chapter-hero { margin-bottom: 4rem; }
.chapter-hero h1 { font-size: 3rem; font-weight: 700; margin-bottom: 1.5rem; letter-spacing:-0.02em; }
.big-quote {
    font-size: 1.8rem; font-weight: 300; color: var(--accent); font-style: italic;
    border-left: 2px solid var(--accent); padding-left: 2rem; margin: 3rem 0; opacity: 0.9;
}