/* ============================================================
   Astra — deep-space theme
   Palette: near-black void, indigo nebulae, cyan/violet accents
   ============================================================ */

:root {
    --void:        #05060f;
    --void-2:      #0a0c1a;
    --nebula-1:    #3b1d6e;
    --nebula-2:    #0e2a5c;
    --accent:      #7ee2ff;
    --accent-soft: #a78bfa;
    --text-glow:   #bfeaff;
    --glass-bg:    rgba(255, 255, 255, 0.045);
    --glass-line:  rgba(255, 255, 255, 0.09);
}

letter-wide { letter-spacing: 0.08em; }

/* ---------- Base ---------- */

html, body {
    min-height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    background:
        radial-gradient(ellipse 80% 55% at 15% -10%, rgba(59, 29, 110, 0.35), transparent 60%),
        radial-gradient(ellipse 70% 50% at 90% 110%, rgba(14, 42, 92, 0.40), transparent 65%),
        linear-gradient(180deg, var(--void) 0%, var(--void-2) 50%, var(--void) 100%);
    background-attachment: fixed;
    color: #dfe3f0;
    font-family: "Inter", system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, h4, .navbar-brand, .btn {
    font-family: "Space Grotesk", "Inter", system-ui, sans-serif;
}

/* ---------- Starfield backdrop ---------- */

#starfield {
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
}

/* Faint nebula glows layered above the canvas */
.nebula {
    position: fixed;
    z-index: -1;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.5;
    pointer-events: none;
}
.nebula-top {
    width: 45vw;   height: 45vw;
    top:  -18vw;   left: -10vw;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.16), transparent 70%);
}
.nebula-bottom {
    width: 50vw;   height: 50vw;
    bottom: -20vw; right: -12vw;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.12), transparent 70%);
}

/* ---------- Glass panels ---------- */

.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-line);
    border-radius: 1.1rem;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
    transition: transform 0.25s ease, border-color 0.25s ease;
}
.glass:hover {
    transform: translateY(-4px);
    border-color: rgba(126, 226, 255, 0.35);
}

/* ---------- Navbar ---------- */

.glass-nav {
    background: rgba(5, 6, 15, 0.65) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.navbar-brand .letter-wide { color: #f2f5ff; }
.nav-link {
    color: rgba(223, 227, 240, 0.75);
}
/* Match Bootstrap's .navbar-nav .nav-link.active specificity (0,3,0) so our
   accent color wins — Bootstrap's default would resolve to near-black here. */
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--text-glow);
}
.nav .btn-outline-glow.active {
    background: var(--accent);
    color: #06131c;
    border-color: var(--accent);
}
.navbar-toggler {
    line-height: 1;
}
/* data-bs-theme=dark gives us a light toggler icon on its own; keep it visible */
.navbar-toggler { --bs-navbar-toggler-border-color: rgba(255,255,255,0.15); }

/* ---------- Hero & headings ---------- */

.hero {
    min-height: calc(100vh - 60px);
    padding: 9rem 0 4rem;
}
.page-hero {
    padding: 9rem 0 2.5rem;
}

.hero-title {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 700;
    color: #f2f5ff;
    letter-spacing: -0.02em;
}
.hero-lede {
    max-width: 42rem;
}

.gradient-text {
    background: linear-gradient(92deg, var(--accent) 10%, var(--accent-soft) 60%, #f0abfc 110%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.eyebrow {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: rgba(223, 227, 240, 0.65);
}
.text-glow {
    color: var(--text-glow);
    text-shadow: 0 0 18px rgba(126, 226, 255, 0.55);
}

/* ---------- Buttons ---------- */

.btn {
    border-radius: 2rem;
}
.btn-glow,
.btn-outline-glow {
    background: linear-gradient(92deg, var(--accent), var(--accent-soft));
    border: none;
    color: #06131c;
    font-weight: 600;
}
.btn-glow,
.btn-outline-glow:hover,
.btn-outline-glow.active,
.btn-outline-glow:not(:disabled):not(.disabled):active {
    filter: none;
    background: linear-gradient(92deg, var(--accent), var(--accent-soft)) !important;
    border: none !important;
    color: #06131c !important;
}
.btn-glow:hover, .btn-outline-glow:hover {
    filter: brightness(1.12);
}
.btn-ghost {
    border: 1px solid rgba(126, 226, 255, 0.4);
    color: var(--text-glow);
    background: transparent;
}
.btn-ghost:hover {
    background: rgba(126, 226, 255, 0.1);
    border-color: var(--accent);
    color: var(--text-glow);
}

/* ---------- Hero orbit animation ---------- */

.orbit-wrap {
    position: relative;
    width: 150px;
    height: 150px;
    opacity: 0.9;
}
.planet-core {
    position: absolute;
    inset: 42%;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #8fd8ff, #3b6ea5 60%, #1c3a63);
    box-shadow: 0 0 30px rgba(126, 226, 255, 0.35);
}
.orbit {
    position: absolute;
    inset: 0;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50%;
    animation: spin 14s linear infinite;
}
.orbit-2 { inset: -22px; animation-duration: 26s; animation-direction: reverse; }
.moon {
    position: absolute;
    top: -4px;
    left: 50%;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px rgba(126, 226, 255, 0.8);
}
.moon-sm { width: 6px; height: 6px; background: var(--accent-soft); }
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ---------- Icons, stats, misc ---------- */

.icon { filter: drop-shadow(0 0 6px rgba(126, 226, 255, 0.35)); }

.stat {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-line);
}

.form-input {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-line);
    color: #eef1f8;
}
.form-input:focus {
    background: rgba(255, 255, 255, 0.07);
    border-color: var(--accent);
    color: #fff;
    box-shadow: 0 0 0 0.2rem rgba(126, 226, 255, 0.15);
}
.form-input::placeholder { color: rgba(223, 227, 240, 0.35); }

.glass-alert {
    background: var(--glass-bg);
    border: 1px solid rgba(126, 226, 255, 0.3);
    border-radius: 1.1rem;
    backdrop-filter: blur(14px);
}

/* ---------- Footer ---------- */

.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-link {
    color: rgba(223, 227, 240, 0.55);
    text-decoration: none;
}
.footer-link:hover { color: var(--text-glow); }

/* Keep main content clear of the fixed navbar */
.site-main { flex: 1 0 auto; }

/* ---------- Motion preferences ---------- */

@media (prefers-reduced-motion: reduce) {
    .orbit, .orbit-2, .moon { animation: none; }
    .glass, .glass:hover { transition: none; transform: none; }
}