/* ===========================================================
   Zilliqa.ai — shared stylesheet
   Fonts: Space Grotesk (headings) + Inter (body), loaded per page.
   Page-specific tweaks are scoped via body classes:
     .home   -> index.html
     .gear   -> products.html
     .thanks -> thank-you.html
   =========================================================== */

:root {
    --bg: #001821;
    --bg-2: #002430;
    --surface: rgba(255, 255, 255, 0.04);
    --surface-border: rgba(77, 187, 186, 0.18);
    --teal: #4DBBBA;
    --teal-bright: #6fe3e1;
    --teal-deep: #0A7581;
    --ink: #001F2A;
    --text: #eaf6f5;
    --muted: #9fc4c2;
    --radius: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    margin: 0; padding: 0;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3 { font-family: 'Space Grotesk', sans-serif; line-height: 1.15; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
a { color: var(--teal); }

/* ---------- Nav ---------- */
nav {
    position: sticky; top: 0; z-index: 50;
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 24px;
    backdrop-filter: blur(14px);
    background: rgba(0, 24, 33, 0.72);
    border-bottom: 1px solid rgba(77, 187, 186, 0.12);
}
.brand { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.25em; letter-spacing: -0.5px; color: #fff; text-decoration: none; }
.brand span { color: var(--teal); }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.95em; font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: var(--teal-bright); }
.nav-cta {
    background: var(--teal); color: var(--ink) !important; padding: 9px 18px;
    border-radius: 999px; font-weight: 600;
    box-shadow: 0 4px 18px rgba(77, 187, 186, 0.3);
}
.nav-cta:hover { background: var(--teal-bright); }

/* ---------- Hero ---------- */
header {
    position: relative; text-align: center;
    padding: 110px 20px 130px;
    overflow: hidden;
}
header::before {
    content: ""; position: absolute; inset: 0; z-index: -2;
    background:
        radial-gradient(900px 480px at 50% -10%, rgba(77,187,186,0.28), transparent 60%),
        radial-gradient(700px 420px at 85% 20%, rgba(10,117,129,0.35), transparent 55%),
        linear-gradient(180deg, #00232f, var(--bg));
}
header::after {
    content: ""; position: absolute; inset: 0; z-index: -1; opacity: 0.4;
    background-image:
        linear-gradient(rgba(77,187,186,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(77,187,186,0.06) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000, transparent 75%);
}
.pill {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 7px 16px; margin-bottom: 26px;
    border: 1px solid var(--surface-border); border-radius: 999px;
    background: var(--surface); color: var(--teal-bright);
    font-size: 0.85em; font-weight: 500; letter-spacing: 0.3px;
}
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal-bright); box-shadow: 0 0 10px var(--teal-bright); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
h1 {
    font-size: clamp(2.4em, 6vw, 4em); font-weight: 700; margin: 0 0 18px;
    letter-spacing: -1.5px;
    background: linear-gradient(180deg, #ffffff 30%, #b8e6e4);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.lead { font-size: clamp(1.05em, 2.4vw, 1.3em); color: var(--muted); max-width: 680px; margin: 0 auto 36px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Compact hero (products page) */
.gear header { padding: 80px 20px 70px; }
.gear header::before {
    background:
        radial-gradient(800px 420px at 50% -20%, rgba(77,187,186,0.25), transparent 60%),
        linear-gradient(180deg, #00232f, var(--bg));
}
.gear header::after { content: none; }
.gear h1 { font-size: clamp(2.1em, 5vw, 3em); letter-spacing: -1px; }
.gear header p { color: var(--muted); font-size: 1.15em; max-width: 600px; margin: 0 auto; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block; cursor: pointer; border: none;
    font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 1.05em;
    padding: 15px 32px; border-radius: 999px; text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn-primary {
    background: linear-gradient(135deg, var(--teal-bright), var(--teal));
    color: var(--ink);
    box-shadow: 0 10px 30px rgba(77, 187, 186, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 38px rgba(77, 187, 186, 0.5); }
.btn-ghost {
    background: var(--surface); color: var(--text);
    border: 1px solid var(--surface-border);
}
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--teal); }

/* ---------- Sections ---------- */
section { padding: 70px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 50px; }
h2 { font-size: clamp(1.8em, 4vw, 2.5em); margin: 0 0 12px; letter-spacing: -0.5px; }
.section-head p { color: var(--muted); margin: 0; font-size: 1.1em; }

/* ---------- Feature cards ---------- */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }
.feature {
    position: relative; padding: 32px 28px; text-align: left;
    background: var(--surface); border: 1px solid rgba(255,255,255,0.07);
    border-radius: var(--radius);
    transition: transform .25s ease, border-color .25s ease, background .25s ease;
    overflow: hidden;
}
.feature::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--teal), transparent);
    opacity: 0; transition: opacity .25s ease;
}
.feature:hover { transform: translateY(-6px); border-color: var(--surface-border); background: rgba(77,187,186,0.06); }
.feature:hover::before { opacity: 1; }
.feature .icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 48px; height: 48px; margin-bottom: 18px;
    border-radius: 12px; font-size: 1.5em;
    background: rgba(77,187,186,0.12); border: 1px solid var(--surface-border);
}
.feature h3 { font-size: 1.3em; margin: 0 0 10px; color: #fff; }
.feature p { margin: 0; color: var(--muted); }

/* ---------- Waitlist ---------- */
.waitlist-card {
    max-width: 640px; margin: 0 auto; text-align: center;
    padding: 48px 36px;
    background: linear-gradient(160deg, rgba(77,187,186,0.10), rgba(10,117,129,0.06));
    border: 1px solid var(--surface-border); border-radius: 24px;
    box-shadow: 0 30px 70px rgba(0,0,0,0.4);
}
form { max-width: 440px; margin: 26px auto 0; display: flex; gap: 10px; flex-wrap: wrap; }
input[type="email"] {
    flex: 1; min-width: 200px; padding: 15px 18px;
    border-radius: 999px; border: 1px solid var(--surface-border);
    background: rgba(0,0,0,0.25); color: var(--text); font-size: 1em;
    transition: border-color .2s, box-shadow .2s;
}
input[type="email"]::placeholder { color: #6f9694; }
input[type="email"]:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 4px rgba(77,187,186,0.15); }
form .btn { padding: 15px 26px; }
.fine { font-size: 0.9em; color: var(--muted); margin-top: 20px; }

/* ---------- Shop ---------- */
.shop-card {
    max-width: 760px; margin: 0 auto; text-align: center;
    padding: 44px 36px;
    background: var(--surface); border: 1px solid rgba(255,255,255,0.07);
    border-radius: 24px;
}
.shop-card p { color: var(--muted); }
.disclosure { font-size: 0.85em; color: #7fa6a4; margin-top: 18px; }

/* ---------- Products page ---------- */
.gear section { padding: 40px 0 20px; }
.gear .disclosure {
    text-align: center; max-width: 820px; margin: 0 auto 10px;
    font-size: 0.9em; color: #7fa6a4;
    padding: 14px 20px; background: var(--surface);
    border: 1px solid rgba(255,255,255,0.06); border-radius: 12px;
}
.category { margin-top: 30px; }
.category-title {
    display: flex; align-items: center; gap: 14px; margin: 0 0 24px;
    font-size: 1.7em;
}
.category-title::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--surface-border), transparent); }

.products { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; }
.product {
    display: flex; flex-direction: column; padding: 28px; text-align: left;
    background: var(--surface); border: 1px solid rgba(255,255,255,0.07);
    border-radius: var(--radius);
    transition: transform .25s ease, border-color .25s ease, background .25s ease;
    overflow: hidden; position: relative;
}
.product::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--teal), transparent);
    opacity: 0; transition: opacity .25s ease;
}
.product:hover { transform: translateY(-6px); border-color: var(--surface-border); background: rgba(77,187,186,0.06); }
.product:hover::before { opacity: 1; }
.product h3 { font-size: 1.3em; margin: 0 0 12px; color: #fff; }
.product p { flex-grow: 1; margin: 0 0 20px; color: var(--muted); }
.buy {
    align-self: flex-start; display: inline-flex; align-items: center; gap: 8px;
    background: linear-gradient(135deg, var(--teal-bright), var(--teal)); color: var(--ink);
    border: none; padding: 12px 22px; font-family: 'Space Grotesk', sans-serif;
    font-size: 1em; font-weight: 600; border-radius: 999px;
    text-decoration: none; transition: transform .2s, box-shadow .2s;
}
.buy:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(77,187,186,0.4); }

.back { text-align: center; margin: 40px 0 10px; }
.back a { color: var(--muted); text-decoration: none; font-weight: 500; transition: color .2s; }
.back a:hover { color: var(--teal-bright); }

/* ---------- Footer ---------- */
footer {
    text-align: center; padding: 40px 20px;
    border-top: 1px solid rgba(77,187,186,0.12);
    color: var(--muted); font-size: 0.9em;
}
footer .brand { font-size: 1.1em; }

/* ---------- Thank-you page ---------- */
.thanks {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 24px; text-align: center;
    background:
        radial-gradient(800px 500px at 50% 0%, rgba(77,187,186,0.22), transparent 60%),
        var(--bg);
}
.thanks .card {
    max-width: 520px; padding: 56px 40px;
    background: linear-gradient(160deg, rgba(77,187,186,0.10), rgba(10,117,129,0.05));
    border: 1px solid var(--surface-border); border-radius: 24px;
    box-shadow: 0 30px 70px rgba(0,0,0,0.45);
    animation: rise .6s ease both;
}
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
.thanks .check {
    width: 76px; height: 76px; margin: 0 auto 24px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%; font-size: 2.2em;
    background: rgba(77,187,186,0.15); border: 1px solid var(--surface-border);
    color: var(--teal-bright);
}
.thanks h1 {
    font-size: 2em; margin: 0 0 14px; letter-spacing: -0.5px;
    background: linear-gradient(180deg, #ffffff 30%, #b8e6e4);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.thanks p { color: var(--muted); font-size: 1.1em; line-height: 1.6; margin: 0 0 30px; }

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
    .nav-links a:not(.nav-cta) { display: none; }
    header { padding: 80px 20px 90px; }
    section { padding: 50px 0; }
}