@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@200;300;400;500&family=Orbitron:wght@300;400;500&display=swap');

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

body { font-family: 'Exo 2', sans-serif; background: #000008; overflow-x: hidden; color: white; }
html, body { height: 100%; }

/* ── HERO ─────────────────────────────────────────────────────── */
.upgrades-hero {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background: #000008;
    display: flex;
    align-items: center;
    justify-content: center;
}

#stars-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* Orbiting satellites */
.orbit-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.04);
    pointer-events: none;
    z-index: 1;
}

.orbit-ring-1 {
    width: 420px; height: 420px;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    animation: orbit-spin 60s linear infinite;
}

.orbit-ring-2 {
    width: 600px; height: 600px;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    animation: orbit-spin 90s linear infinite reverse;
}

.orbit-ring-3 {
    width: 800px; height: 800px;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    animation: orbit-spin 130s linear infinite;
}

@keyframes orbit-spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Satellite dots on rings */
.orbit-dot {
    position: absolute;
    border-radius: 50%;
    top: 50%; left: 50%;
}

.orbit-ring-1 .orbit-dot {
    width: 5px; height: 5px;
    background: rgba(180,160,255,0.55);
    box-shadow: 0 0 8px rgba(180,160,255,0.4);
    transform: translate(-50%, calc(-50% - 210px));
}

.orbit-ring-2 .orbit-dot {
    width: 4px; height: 4px;
    background: rgba(100,180,255,0.45);
    box-shadow: 0 0 8px rgba(100,180,255,0.35);
    transform: translate(-50%, calc(-50% - 300px));
}

.orbit-ring-3 .orbit-dot {
    width: 3px; height: 3px;
    background: rgba(255,200,100,0.4);
    box-shadow: 0 0 6px rgba(255,200,100,0.3);
    transform: translate(-50%, calc(-50% - 400px));
}

/* Hero central planet (gas giant / abstraction) */
.hero-planet {
    position: absolute;
    z-index: 2;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 180px; height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 38%, #1a1a3e 0%, #0a0a20 55%, #000008 100%);
    box-shadow:
        0 0 60px rgba(80,60,180,0.18),
        0 0 120px rgba(40,30,100,0.12),
        inset 0 0 40px rgba(120,100,255,0.06);
    overflow: hidden;
}

.hero-planet::after {
    content: '';
    position: absolute;
    inset: -10px;
    background: conic-gradient(
        from 0deg,
        transparent 0%,
        rgba(120,100,255,0.04) 20%,
        transparent 40%,
        rgba(80,60,200,0.06) 60%,
        transparent 80%,
        rgba(120,100,255,0.04) 100%
    );
    border-radius: 50%;
    animation: hero-planet-glow 8s ease-in-out infinite;
}

@keyframes hero-planet-glow {
    0%, 100% { opacity: 0.6; }
    50%       { opacity: 1; }
}

/* Hero text */
.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    margin-top: -30px;
}

.hero-eyebrow {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.62rem;
    font-weight: 300;
    letter-spacing: 5px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.25);
}

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 300;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.92);
    line-height: 1.05;
}

.hero-title em {
    font-style: normal;
    color: rgba(255,255,255,0.22);
}

.hero-subtitle {
    max-width: 480px;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.35);
    line-height: 1.8;
    font-weight: 200;
    letter-spacing: 0.4px;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.4;
    animation: scroll-hint-pulse 2.4s ease-in-out infinite;
}

.hero-scroll-hint span {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.56rem;
    font-weight: 300;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.6);
}

.scroll-arrow {
    width: 1px;
    height: 32px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
}

@keyframes scroll-hint-pulse {
    0%, 100% { opacity: 0.3; transform: translateX(-50%) translateY(0); }
    50%       { opacity: 0.6; transform: translateX(-50%) translateY(4px); }
}

/* ── UPGRADES SECTION ─────────────────────────────────────────── */
.upgrades-section {
    background: #0a0a14;
    padding: 100px 0 120px;
}

.upgrades-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 50px;
}

/* ── SECTION HEADER ───────────────────────────────────────────── */
.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 80px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.section-eyebrow {
    font-family: 'Exo 2', sans-serif;
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.3);
    margin-bottom: 14px;
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.8rem;
    font-weight: 300;
    color: #fff;
    letter-spacing: 2px;
    text-transform: uppercase;
    line-height: 1.1;
}

.section-title em {
    font-style: normal;
    color: rgba(255,255,255,0.22);
}

.section-header-right {
    max-width: 320px;
    text-align: right;
}

.section-header-right p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.35);
    line-height: 1.8;
    font-weight: 200;
    letter-spacing: 0.3px;
}

/* ── UPGRADE CARDS ─────────────────────────────────────────────── */
.upgrades-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.upgrade-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 24px;
    padding: 0;
    overflow: hidden;
    transition: transform 0.35s cubic-bezier(0.34,1.2,0.64,1), box-shadow 0.35s ease, border-color 0.35s ease;
    position: relative;
    display: flex;
    flex-direction: column;
}

.upgrade-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255,255,255,0.14);
    box-shadow: 0 24px 70px rgba(0,0,0,0.55);
}

/* Card header — starfield + planet */
.card-visual {
    position: relative;
    height: 260px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: #000008;
}

/* Per-satellite glow tint over starfield */
.upgrade-card[data-satellite="luna"]   { border-color: rgba(200,200,220,0.1); }
.upgrade-card[data-satellite="io"]     { border-color: rgba(255,200,80,0.1);  }
.upgrade-card[data-satellite="europa"] { border-color: rgba(80,160,255,0.1);  }
.upgrade-card[data-satellite="titano"] { border-color: rgba(200,140,80,0.1);  }

.upgrade-card[data-satellite="luna"]   .card-visual { --glow: rgba(160,155,200,0.07); }
.upgrade-card[data-satellite="io"]     .card-visual { --glow: rgba(200,130,30,0.09);  }
.upgrade-card[data-satellite="europa"] .card-visual { --glow: rgba(50,110,200,0.09);  }
.upgrade-card[data-satellite="titano"] .card-visual { --glow: rgba(180,110,40,0.09);  }

.card-visual::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 55% 45%, var(--glow, rgba(255,255,255,0.04)) 0%, transparent 70%);
    pointer-events: none;
    z-index: 2;
}

/* Starfield canvas inside each card */
.card-stars {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* Planet image */
.card-planet-img {
    position: relative;
    z-index: 3;
    width: 160px;
    height: 160px;
    object-fit: contain;
    animation: sat-float 6s ease-in-out infinite;
    filter: drop-shadow(0 0 28px var(--planet-glow, rgba(255,255,255,0.2)));
    mix-blend-mode: screen;
}

.upgrade-card[data-satellite="luna"]   .card-planet-img { --planet-glow: rgba(180,180,210,0.35); }
.upgrade-card[data-satellite="io"]     .card-planet-img { --planet-glow: rgba(240,170,50,0.4);   }
.upgrade-card[data-satellite="europa"] .card-planet-img { --planet-glow: rgba(80,160,255,0.35);  }
.upgrade-card[data-satellite="titano"] .card-planet-img { --planet-glow: rgba(210,140,60,0.38);  }

@keyframes sat-float {
    0%, 100% { transform: translateY(0px); }
    50%       { transform: translateY(-10px); }
}

.upgrade-card:nth-child(2) .card-planet-img { animation-delay: -2s; }
.upgrade-card:nth-child(3) .card-planet-img { animation-delay: -4s; }
.upgrade-card:nth-child(4) .card-planet-img { animation-delay: -1s; }

/* Decorative orbit ring inside card visual */
.card-orbit {
    position: absolute;
    z-index: 2;
    border-radius: 50%;
    border: 1px dashed rgba(255,255,255,0.045);
    pointer-events: none;
    width: 210px; height: 210px;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    animation: card-orbit-spin 22s linear infinite;
}

.card-orbit-2 {
    width: 320px; height: 320px;
    animation-duration: 38s;
    animation-direction: reverse;
    border-style: solid;
    border-color: rgba(255,255,255,0.02);
}

@keyframes card-orbit-spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Card body */
.card-body {
    padding: 28px 32px 32px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-satellite-label {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.55rem;
    font-weight: 400;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.upgrade-card[data-satellite="luna"]   .card-satellite-label { color: rgba(200,200,220,0.4); }
.upgrade-card[data-satellite="io"]     .card-satellite-label { color: rgba(240,190,80,0.45); }
.upgrade-card[data-satellite="europa"] .card-satellite-label { color: rgba(80,160,255,0.45); }
.upgrade-card[data-satellite="titano"] .card-satellite-label { color: rgba(210,150,80,0.45); }

.card-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.15rem;
    font-weight: 300;
    color: rgba(255,255,255,0.9);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.card-tagline {
    font-size: 0.76rem;
    color: rgba(255,255,255,0.38);
    line-height: 1.7;
    font-weight: 200;
    letter-spacing: 0.3px;
    margin-bottom: 24px;
    flex: 1;
}

/* Price + CTA row */
.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.card-price {
    display: flex;
    flex-direction: column;
}

.card-price-amount {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.6rem;
    font-weight: 300;
    color: #fff;
    line-height: 1;
}

.card-price-amount sup {
    font-size: 0.8rem;
    font-weight: 300;
    color: rgba(255,255,255,0.4);
    vertical-align: super;
    margin-right: 2px;
}

.card-price-period {
    font-size: 0.62rem;
    color: rgba(255,255,255,0.2);
    letter-spacing: 1.5px;
    font-weight: 200;
    margin-top: 3px;
}

.card-cta {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.12);
    background: transparent;
    color: rgba(255,255,255,0.5);
    font-family: 'Exo 2', sans-serif;
    font-size: 0.68rem;
    font-weight: 400;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
    text-decoration: none;
}

.card-cta:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
    border-color: rgba(255,255,255,0.25);
}

/* Luna — grigio lunare */
.upgrade-card[data-satellite="luna"] .card-cta:hover {
    background: rgba(200,200,230,0.07);
    border-color: rgba(200,200,230,0.3);
}

/* Io — ambra */
.upgrade-card[data-satellite="io"] .card-cta:hover {
    background: rgba(240,190,80,0.08);
    border-color: rgba(240,190,80,0.3);
}

/* Europa — blu ghiaccio */
.upgrade-card[data-satellite="europa"] .card-cta:hover {
    background: rgba(80,160,255,0.08);
    border-color: rgba(80,160,255,0.3);
}

/* Titano — arancione/oro */
.upgrade-card[data-satellite="titano"] .card-cta:hover {
    background: rgba(210,150,80,0.08);
    border-color: rgba(210,150,80,0.3);
}

/* "Coming soon" badge */
.card-badge-soon {
    display: inline-block;
    background: rgba(255,255,255,0.05);
    color: rgba(255,255,255,0.28);
    font-family: 'Exo 2', sans-serif;
    font-size: 0.55rem;
    font-weight: 400;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 14px;
    border: 1px solid rgba(255,255,255,0.08);
    align-self: flex-start;
}

/* ── RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 1000px) {
    .section-header { flex-direction: column; align-items: flex-start; gap: 20px; }
    .section-header-right { text-align: left; }
}

@media (max-width: 800px) {
    .upgrades-grid { grid-template-columns: 1fr; }
    .card-visual { height: 200px; }
    .card-planet-img { width: 130px; height: 130px; }
    .upgrades-hero { height: 100svh; }
    .orbit-ring-3 { display: none; }
}

@media (max-width: 600px) {
    .upgrades-inner { padding: 0 20px; }
    .upgrades-section { padding: 70px 0 80px; }
    .section-title { font-size: 2rem; }
    .card-facts { gap: 14px; }
}