/* ============================================================
   Fly2Sun.eu.org — Global Styles
   Sci-Fi · Responsive · Dark Theme
   ============================================================ */

/* ----- CSS Variables ----- */
:root {
    --cyan:       #00e0ff;
    --cyan-dim:   #0088aa;
    --gold:       #ffc850;
    --gold-dim:   #aa7020;
    --bg-deep:    #050510;
    --bg-panel:   rgba(6, 16, 38, 0.82);
    --bg-panel-h: rgba(10, 24, 52, 0.88);
    --border:     rgba(0, 220, 255, 0.18);
    --border-h:   rgba(0, 220, 255, 0.45);
    --text:       #d0d8f0;
    --text-dim:   #8a9ab8;
    --text-muted: #5a6580;
    --radius:     10px;
    --radius-sm:  6px;
    --nav-h:      56px;
    --font:       'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ----- Reset ----- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html {
    scroll-behavior: smooth; font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}
body {
    font-family: var(--font);
    background: var(--bg-deep);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
/* Global touch optimization */
a, button, .planet, .sun, .g-card, .feat-card, .lk, .card,
.guide-card, .kb-card, .link-card, .mission-item, .season-card,
.gallery-card, .planet-nav-btn, .size-dot, .nav-toggle {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }

/* ----- Scanlines Overlay ----- */
.scanlines {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0,0,0,0.025) 2px,
        rgba(0,0,0,0.025) 4px
    );
    z-index: 1; pointer-events: none;
}

/* ----- Starfield Canvas ----- */
#starCanvas {
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0; pointer-events: none;
}

/* ----- Navigation ----- */
.site-nav {
    position: fixed; top: 0; left: 0; width: 100%;
    height: var(--nav-h); z-index: 100;
    background: rgba(5,5,18,0.85);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    display: flex; align-items: center;
    padding: 0 24px;
}
.site-nav .nav-logo {
    font-size: 1.3rem; font-weight: 800;
    letter-spacing: 0.08em;
    color: #fff;
    text-shadow: 0 0 10px var(--cyan);
    margin-right: auto;
    text-decoration: none;
    white-space: nowrap;
}
.site-nav .nav-logo:hover { text-decoration: none; color: var(--cyan); }
.nav-links {
    display: flex; gap: 8px;
}
.nav-links a {
    display: block;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem; letter-spacing: 0.06em;
    color: rgba(200,210,230,0.85);
    transition: all 0.25s;
    white-space: nowrap;
    text-shadow: 0 0 6px rgba(255,255,255,0.05);
}
.nav-links a:hover,
.nav-links a.active {
    color: #fff;
    background: rgba(0,220,255,0.1);
    text-decoration: none;
    text-shadow: 0 0 12px rgba(0,220,255,0.4);
}
.nav-toggle {
    display: none;
    flex-direction: column; gap: 5px;
    padding: 8px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.03);
    transition: all 0.25s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
.nav-toggle:hover,
.nav-toggle:active {
    border-color: var(--cyan);
    background: rgba(0,220,255,0.08);
}
.nav-toggle span {
    display: block;
    width: 24px; height: 2.5px;
    background: var(--cyan);
    border-radius: 2px;
    transition: all 0.3s;
    box-shadow: 0 0 6px rgba(0,220,255,0.3);
}
.nav-toggle.open span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
    opacity: 0; transform: scaleX(0);
}
.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* ----- Page Layout ----- */
.page-wrap {
    position: relative; z-index: 2;
    padding-top: var(--nav-h);
    min-height: 100vh;
}
.container {
    width: 100%; max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
.section {
    padding: 70px 0;
}

/* ----- Typography ----- */
.page-title {
    text-align: center; padding: 50px 20px 30px;
}
.page-title h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 900; letter-spacing: 0.1em;
    color: #fff;
    text-shadow: 0 0 14px var(--cyan), 0 0 50px rgba(0,220,255,0.55), 0 2px 4px rgba(0,0,0,0.5);
}
.page-title .subtitle {
    font-size: clamp(0.9rem, 2vw, 1.15rem);
    letter-spacing: 0.3em; color: var(--cyan);
    margin-top: 8px; opacity: 0.85;
}
.page-title .hr {
    width: 80px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    margin: 16px auto 0;
}
.section-header {
    text-align: center; margin-bottom: 44px;
}
.section-header h2 {
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    letter-spacing: 0.15em; color: #fff;
    text-shadow: 0 0 16px rgba(0,220,255,0.5), 0 0 40px rgba(0,200,255,0.2);
}
.section-header .hr {
    width: 64px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    margin: 12px auto 0;
}

/* ----- Cards ----- */
.card {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    transition: all 0.3s;
    overflow: hidden;
}
.card:hover {
    border-color: var(--border-h);
    box-shadow: 0 8px 36px rgba(0,200,255,0.07);
    transform: translateY(-4px);
}
.card-glow-top::before {
    content: '';
    position: absolute; top: 0; left: 0;
    width: 100%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    opacity: 0; transition: opacity 0.3s;
}
.card-glow-top:hover::before { opacity: 1; }

/* ----- Buttons ----- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem; letter-spacing: 0.06em;
    font-weight: 600;
    border: 1px solid var(--border);
    color: #fff;
    background: rgba(0,200,255,0.06);
    text-shadow: 0 0 8px rgba(0,220,255,0.3);
    transition: all 0.3s;
}
.btn:hover {
    border-color: var(--cyan);
    background: rgba(0,220,255,0.12);
    box-shadow: 0 0 20px rgba(0,200,255,0.2);
    text-decoration: none;
}
.btn-primary {
    background: rgba(0,200,255,0.14);
    border-color: var(--cyan);
    color: #fff;
    box-shadow: 0 0 14px rgba(0,220,255,0.1);
}

/* ----- Grid Systems ----- */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

/* ----- Footer ----- */
.site-footer {
    position: relative; z-index: 2;
    text-align: center; padding: 36px 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
    font-size: 0.78rem; letter-spacing: 0.08em;
}
.site-footer p + p { margin-top: 4px; }
.site-footer a { color: var(--cyan); }

/* ----- Keyframes ----- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50%      { opacity: 1; }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-10px); }
}

.anim-fade-up {
    opacity: 0; transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.anim-fade-up.visible {
    opacity: 1; transform: translateY(0);
}

/* ----- Meteor ----- */
.meteor {
    position: fixed;
    width: 2px; height: 70px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.7), transparent);
    z-index: 0; pointer-events: none;
    animation: meteorFall linear forwards;
}
@keyframes meteorFall {
    0%   { transform: translate(0,0) rotate(-35deg); opacity: 1; }
    70%  { opacity: 1; }
    100% { transform: translate(-380px,550px) rotate(-35deg); opacity: 0; }
}

/* ----- Glow Pulse (for sun, hero elements) ----- */
@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(0,220,255,0.2), 0 0 60px rgba(0,200,255,0.08); }
    50%      { box-shadow: 0 0 35px rgba(0,220,255,0.4), 0 0 90px rgba(0,200,255,0.15); }
}

/* ----- Shimmer sweep (for cards) ----- */
.card-shimmer {
    position: relative;
    overflow: hidden;
}
.card-shimmer::after {
    content: '';
    position: absolute; top: 0; left: -100%;
    width: 60%; height: 100%;
    background: linear-gradient(90deg,
        transparent,
        rgba(255,255,255,0.03) 40%,
        rgba(255,255,255,0.06) 50%,
        rgba(255,255,255,0.03) 60%,
        transparent
    );
    transform: skewX(-15deg);
    transition: left 0.6s ease;
}
.card-shimmer:hover::after {
    left: 120%;
}

/* ----- Border glow animation ----- */
@keyframes borderGlow {
    0%, 100% { border-color: rgba(0,220,255,0.18); }
    50%      { border-color: rgba(0,220,255,0.45); }
}
.border-pulse {
    animation: borderGlow 3s ease-in-out infinite;
}

/* ----- Spark particle (for explosions) ----- */
.spark {
    position: fixed;
    pointer-events: none; z-index: 999;
    border-radius: 50%;
    animation: sparkFly linear forwards;
}
@keyframes sparkFly {
    0%   { transform: translate(0,0) scale(1); opacity: 1; }
    100% { transform: translate(var(--sx), var(--sy)) scale(0); opacity: 0; }
}

/* ----- Orbit trail dot (solar system) ----- */
.orbit-trail {
    position: absolute;
    pointer-events: none;
    border-radius: 50%;
    animation: trailFade linear forwards;
}
@keyframes trailFade {
    0%   { opacity: 0.6; transform: scale(1); }
    100% { opacity: 0; transform: scale(0.3); }
}

/* ----- Tooltip ----- */
.floating-tip {
    position: fixed;
    background: rgba(4,10,30,0.96);
    border: 1px solid rgba(0,220,255,0.4);
    border-radius: 7px; padding: 10px 14px;
    font-size: 0.8rem; line-height: 1.6;
    color: #d0d8f0; max-width: 260px;
    pointer-events: none; opacity: 0;
    z-index: 200; backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: opacity 0.18s;
    word-break: break-word;
    overflow-wrap: break-word;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 0 1px rgba(0,0,0,0.3);
}
.floating-tip::before {
    content: '';
    position: absolute; top: 0; left: 0;
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}
/* Tooltip mobile: narrower, centered positioning via JS */
@media (max-width: 480px) {
    .floating-tip {
        max-width: min(220px, 60vw);
        font-size: 0.72rem;
        padding: 8px 12px;
        line-height: 1.45;
        border-radius: 6px;
    }
}

/* ----- Page-specific: Planet Badge ----- */
.planet-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.82rem; letter-spacing: 0.05em;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.04);
}

/* ----- Page-specific: Stat Row ----- */
.stat-row {
    display: flex; flex-wrap: wrap; gap: 20px;
}
.stat-item {
    flex: 1; min-width: 120px;
    text-align: center;
    padding: 16px 12px;
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-sm);
}
.stat-item .val {
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    font-weight: 700; color: var(--cyan);
    letter-spacing: 0.04em;
}
.stat-item .lbl {
    font-size: 0.72rem; color: var(--text-dim);
    margin-top: 4px; letter-spacing: 0.06em;
}

/* ----- Responsive: Tablet ----- */
@media (max-width: 768px) {
    :root { --nav-h: 50px; }
    .site-nav { padding: 0 12px; }
    .nav-links {
        position: fixed;
        top: var(--nav-h); left: 0;
        width: 100%; max-height: calc(100vh - var(--nav-h));
        overflow-y: auto;
        background: rgba(5,5,18,0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 8px 16px 16px;
        gap: 0;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        box-shadow: 0 12px 40px rgba(0,0,0,0.6);
        transform: translateY(-120%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 99;
    }
    .nav-links.open { transform: translateY(0); }
    .nav-links a {
        padding: 13px 16px; font-size: 0.95rem;
        border-radius: var(--radius-sm);
        border-bottom: 1px solid rgba(255,255,255,0.03);
        transition: all 0.2s;
    }
    .nav-links a:active,
    .nav-links a:hover {
        background: rgba(0,220,255,0.1);
        color: #fff;
    }
    .nav-toggle { display: flex; }
    .section { padding: 46px 0; }
    .page-title { padding: 34px 16px 20px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .feat-card { padding: 20px 14px; }
    .feat-card:hover { transform: none; }
    .card:hover { transform: none; }
}

/* ----- Responsive: Mobile ----- */
@media (max-width: 480px) {
    .container { padding: 0 12px; }
    .section { padding: 30px 0; }
    .page-title { padding: 22px 12px 14px; }
    .page-title h1 { font-size: 1.7rem; }
    .stat-row { gap: 8px; }
    .stat-item { min-width: 72px; padding: 10px 6px; }
    .stat-item .val { font-size: 1.1rem; }
    .btn { padding: 10px 18px; font-size: 0.82rem; }
    .nav-logo { font-size: 1.1rem; }
    .nav-links a { padding: 12px 14px; font-size: 0.9rem; }
    .feat-card { padding: 18px 12px; }
    .feat-card h3 { font-size: 1rem; }
    .feat-card p { font-size: 0.8rem; }
    .quick-links { gap: 8px; }
    .quick-links .btn { padding: 8px 14px; font-size: 0.78rem; letter-spacing: 0.03em; }
}

/* ----- Solar system overflow containment ----- */
.solar-wrap {
    overflow: clip;
    contain: paint style layout;
}