/* Heliosgazer - Co-op Arcade Shmup */

:root {
    --bg: #05060f;
    --surface: #0a0c1a;
    --text: #eaf2ff;
    --text-dim: #6f7896;
    --accent: #ffb02e;              /* solar amber */
    --accent-glow: rgba(255, 176, 46, 0.3);
    --accent2: #40e0ff;             /* ion-trail cyan */
}

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

body {
    font-family: 'Press Start 2P', monospace;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
}

/* CRT scanline overlay */
body::after {
    content: '';
    position: fixed; inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    pointer-events: none;
    z-index: 9999;
}

/* Nav */
nav {
    position: fixed; top: 0; width: 100%; z-index: 100;
    background: rgba(5, 6, 15, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255, 176, 46, 0.12);
}
.nav-inner {
    max-width: 960px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.6rem 1.5rem;
}
.logo {
    text-decoration: none; color: var(--text);
    font-size: 0.75rem; letter-spacing: 0.08em;
    display: flex; align-items: center; gap: 0.5rem;
}
.logo-mark {
    display: inline-block; width: 14px; height: 14px;
    border-radius: 50%;
    background: radial-gradient(circle at 40% 35%, #fff2c0, var(--accent) 55%, #b35c00 100%);
    box-shadow: 0 0 12px var(--accent-glow);
}
.btn-play {
    background: var(--accent); color: #1a0e00;
    padding: 0.4rem 1rem; border-radius: 4px;
    font-family: 'Press Start 2P', monospace;
    font-size: 0.6rem; font-weight: 700;
    text-decoration: none; letter-spacing: 0.02em;
    transition: opacity 0.2s;
}
.btn-play:hover { opacity: 0.85; }

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    text-align: center;
    padding: 0 1.5rem;
    overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }

/* Scrolling starfield */
.stars {
    position: absolute; inset: -50% 0 0 0; height: 200%;
    background:
        radial-gradient(1px 1px at 20% 30%, #fff, transparent),
        radial-gradient(1px 1px at 70% 20%, #fff, transparent),
        radial-gradient(1px 1px at 40% 70%, #fff, transparent),
        radial-gradient(2px 2px at 85% 60%, #fff, transparent),
        radial-gradient(1px 1px at 55% 45%, #fff, transparent),
        radial-gradient(1px 1px at 10% 80%, #fff, transparent),
        radial-gradient(2px 2px at 90% 15%, #fff, transparent),
        radial-gradient(1px 1px at 33% 12%, #fff, transparent);
    opacity: 0.55;
    animation: scroll 8s linear infinite;
}
@keyframes scroll { to { transform: translateY(50%); } }

/* The dying sun behind everything */
.sun {
    position: absolute; top: -140px; left: 50%;
    width: 340px; height: 340px; margin-left: -170px;
    border-radius: 50%;
    background: radial-gradient(circle at 50% 45%, #fff6d8 0%, var(--accent) 30%, #c24b00 62%, transparent 72%);
    box-shadow: 0 0 120px 40px rgba(255,176,46,0.25);
    animation: breathe 7s ease-in-out infinite;
}
@keyframes breathe {
    0%, 100% { transform: scale(1); opacity: 0.95; }
    50%      { transform: scale(1.05); opacity: 1; }
}

/* Player wing gliding across */
.wing {
    position: absolute; bottom: 22%; left: 50%;
    width: 200px; height: 60px; margin-left: -100px;
    animation: bank 6s ease-in-out infinite;
}
@keyframes bank {
    0%, 100% { transform: translateX(-30px); }
    50%      { transform: translateX(30px); }
}
.ship {
    position: absolute; bottom: 0;
    width: 0; height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 22px solid var(--accent2);
    filter: drop-shadow(0 0 8px rgba(64,224,255,0.6));
}
.ship::after {
    content: ''; position: absolute; top: 22px; left: -4px;
    width: 8px; height: 12px;
    background: linear-gradient(to bottom, rgba(64,224,255,0.8), transparent);
}
.ship.s1 { left: 90px; }
.ship.s2 { left: 60px; bottom: -8px; transform: scale(0.85); }
.ship.s3 { left: 120px; bottom: -8px; transform: scale(0.85); }

.hero-bg-overlay {
    position: absolute; inset: 0; z-index: 3;
    background: linear-gradient(
        to bottom,
        rgba(5,6,15,0.35) 0%,
        rgba(5,6,15,0.72) 60%,
        var(--bg) 100%
    );
}
.hero > *:not(.hero-bg) { position: relative; z-index: 4; }

.hero h1 {
    font-size: 3rem;
    color: var(--accent);
    letter-spacing: 0.06em;
    text-shadow:
        0 0 80px var(--accent-glow),
        0 0 24px rgba(64,224,255,0.35),
        4px 4px 0 rgba(0,0,0,0.6);
    margin-bottom: 1.5rem;
}
.hero h1 .tm { font-size: 0.9rem; vertical-align: top; color: var(--accent2); }

.tagline {
    font-size: 0.95rem;
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
}
.hero-sub {
    font-size: 0.7rem;
    color: var(--text-dim);
    font-style: italic;
    line-height: 1.9;
    letter-spacing: 0.04em;
    margin: 0 auto 2.2rem;
    max-width: 480px;
}

/* Blinking cursor */
.cursor {
    display: inline-block;
    width: 0.6em; height: 1.1em;
    background: var(--accent);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: #1a0e00;
    padding: 0.8rem 2rem;
    border-radius: 4px;
    font-family: 'Press Start 2P', monospace;
    font-size: 0.75rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.03em;
    transition: transform 0.15s, box-shadow 0.15s;
    border: 2px solid var(--accent);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--accent-glow);
}

.hero-note {
    color: var(--text-dim);
    font-size: 0.5rem;
    margin-top: 1rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* Feature tiles */
.tiles {
    background: var(--surface);
    border-top: 1px solid rgba(255, 176, 46, 0.08);
    padding: 4rem 1.5rem;
}
.tiles-inner {
    max-width: 960px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
}
.tile {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,176,46,0.1);
    border-radius: 8px;
    padding: 1.8rem 1.4rem;
    text-align: center;
}
.tile-icon {
    width: 48px; height: 48px; margin: 0 auto 1.2rem;
    border-radius: 50%;
    box-shadow: 0 0 24px var(--accent-glow);
}
.i-coop  { background: radial-gradient(circle at 35% 35%, var(--accent2), #0a4a5a); }
.i-cross { background: conic-gradient(var(--accent), var(--accent2), var(--accent)); }
.i-swarm { background: radial-gradient(circle at 50% 30%, var(--accent), #7a3a00); }
.tile h3 {
    font-size: 0.7rem; color: var(--accent);
    margin-bottom: 0.9rem; letter-spacing: 0.03em;
}
.tile p {
    font-size: 0.55rem; color: var(--text-dim);
    line-height: 2;
}

/* Hook Section */
.hook {
    background: var(--bg);
    border-top: 1px solid rgba(255, 176, 46, 0.08);
    padding: 4rem 1.5rem;
    text-align: center;
}
.hook-inner { max-width: 640px; margin: 0 auto; }
.fragment {
    font-size: 0.6rem;
    color: var(--text-dim);
    font-style: italic;
    line-height: 2;
    margin: 0 auto 1.5rem;
    max-width: 520px;
    opacity: 0.75;
    transition: opacity 0.3s;
}
.fragment:hover { opacity: 1; color: var(--text); }
.fragment.last {
    color: var(--text); opacity: 0.9;
    font-size: 0.65rem; margin-bottom: 2.5rem;
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--accent);
    padding: 0.7rem 1.8rem;
    border: 1px solid var(--accent);
    border-radius: 4px;
    font-family: 'Press Start 2P', monospace;
    font-size: 0.65rem;
    text-decoration: none;
    letter-spacing: 0.03em;
    transition: background 0.2s, color 0.2s;
}
.btn-secondary:hover { background: var(--accent); color: #1a0e00; }

/* Footer */
footer {
    padding: 1.5rem;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.45rem;
    letter-spacing: 0.05em;
    border-top: 1px solid rgba(255,255,255,0.03);
}
footer a { color: var(--text-dim); text-decoration: none; }
footer a:hover { color: var(--accent); }
footer .sep { margin: 0 0.5rem; opacity: 0.3; }
.footer-powered { margin-top: 0.5rem; }

/* Mobile */
@media (max-width: 768px) {
    .hero h1 { font-size: 1.7rem; }
    .tagline { font-size: 0.75rem; }
    .btn-primary { font-size: 0.65rem; padding: 0.7rem 1.5rem; }
    .tiles-inner { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .hero h1 { font-size: 1.3rem; letter-spacing: 0.03em; }
    .tagline { font-size: 0.65rem; }
}