@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Lexend:wght@600;700;800&display=swap');

/* ============================================================= Tokens */
:root {
    /* brand */
    --rose-50:  #FFF1F2;
    --rose-100: #FFE4E6;
    --rose-200: #FECDD3;
    --rose-300: #FDA4AF;
    --rose-400: #FB7185;
    --rose-500: #F43F5E;
    --rose-600: #E11D48;
    --rose-700: #BE123C;
    --rose-800: #9F1239;

    --primary: var(--rose-600);
    --primary-strong: var(--rose-700);
    --primary-soft: var(--rose-50);
    --primary-ring: rgba(225, 29, 72, .35);

    /* surfaces (light) */
    --bg: #FFF8FA;
    --bg-elev: #FFFFFF;
    --surface: #FFFFFF;
    --surface-2: #FFF5F7;
    --surface-inset: #FFF1F3;
    --border: #F5D0DA;
    --border-strong: #EBA9BA;

    /* text */
    --text: #1B1420;
    --text-muted: #6B6472;
    --text-faint: #9A93A1;
    --on-primary: #FFFFFF;

    /* status */
    --success: #16A34A;
    --success-bg: #ECFDF5;
    --success-border: #A7F3D0;
    --danger: #E11D48;
    --danger-bg: #FEF2F2;
    --danger-border: #FECACA;
    --warning: #B45309;

    /* geometry */
    --r-sm: 8px;
    --r-md: 12px;
    --r-lg: 18px;
    --r-xl: 26px;
    --r-pill: 999px;

    --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
    --sp-5: 24px; --sp-6: 32px; --sp-7: 48px; --sp-8: 72px;

    --shadow-sm: 0 1px 2px rgba(24, 10, 20, .06);
    --shadow-md: 0 8px 24px rgba(190, 18, 60, .10);
    --shadow-lg: 0 24px 60px rgba(190, 18, 60, .16);
    --shadow-glow: 0 0 0 4px var(--primary-ring);

    --ease: cubic-bezier(.4, 0, .2, 1);
    --ease-out: cubic-bezier(.16, 1, .3, 1);
    --dur: .18s;

    --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Lexend', var(--font);
    --font-mono: ui-monospace, 'SFMono-Regular', 'JetBrains Mono', Menlo, Consolas, monospace;

    --container: 1536px;
    --gutter: 24px;

    color-scheme: light;
}

:root[data-theme="dark"] {
    --primary: var(--rose-500);
    --primary-strong: var(--rose-400);
    --primary-soft: #2A1620;
    --primary-ring: rgba(244, 63, 94, .35);

    --bg: #140E17;
    --bg-elev: #1C141F;
    --surface: #1C141F;
    --surface-2: #241A28;
    --surface-inset: #100B12;
    --border: #35293B;
    --border-strong: #4A3A52;

    --text: #F6EEF3;
    --text-muted: #B7ABBD;
    --text-faint: #8A7E92;
    --on-primary: #FFFFFF;

    --success-bg: #0C2A1E;
    --success-border: #1C5138;
    --danger-bg: #351320;
    --danger-border: #6A2338;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-md: 0 12px 32px rgba(0, 0, 0, .45);
    --shadow-lg: 0 30px 70px rgba(0, 0, 0, .55);

    color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
    :root[data-theme="system"] {
        --primary: var(--rose-500);
        --primary-strong: var(--rose-400);
        --primary-soft: #2A1620;
        --primary-ring: rgba(244, 63, 94, .35);
        --bg: #140E17;
        --bg-elev: #1C141F;
        --surface: #1C141F;
        --surface-2: #241A28;
        --surface-inset: #100B12;
        --border: #35293B;
        --border-strong: #4A3A52;
        --text: #F6EEF3;
        --text-muted: #B7ABBD;
        --text-faint: #8A7E92;
        --success-bg: #0C2A1E;
        --success-border: #1C5138;
        --danger-bg: #351320;
        --danger-border: #6A2338;
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
        --shadow-md: 0 12px 32px rgba(0, 0, 0, .45);
        --shadow-lg: 0 30px 70px rgba(0, 0, 0, .55);
        color-scheme: dark;
    }
}

/* ============================================================= Base */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font);
    color: var(--text);
    background:
        radial-gradient(1200px 600px at 100% -10%, color-mix(in srgb, var(--primary) 10%, transparent), transparent 60%),
        radial-gradient(900px 500px at -10% 10%, color-mix(in srgb, var(--rose-400) 8%, transparent), transparent 55%),
        var(--bg);
    background-attachment: fixed;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary-strong); text-decoration: none; transition: color var(--dur) var(--ease); }
a:hover { color: var(--primary); }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.15; margin: 0 0 .5rem; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem); }
h2 { font-size: clamp(1.4rem, 1.1rem + 1.2vw, 1.9rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.page { padding: var(--sp-7) 0 var(--sp-8); }
.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); }
.center { text-align: center; }
.stack > * + * { margin-top: var(--sp-4); }
.section + .section { margin-top: var(--sp-7); }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .72rem; font-weight: 700; color: var(--primary); }

/* ============================================================= Nav */
.site-nav {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in srgb, var(--bg-elev) 82%, transparent);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--border);
}
.nav-inner { max-width: var(--container); margin: 0 auto; padding: .75rem var(--gutter); display: flex; align-items: center; gap: var(--sp-4); }
.brand { font-family: var(--font-display); font-weight: 800; font-size: 1.15rem; color: var(--text); display: inline-flex; align-items: center; gap: .4rem; }
.brand .glyph { font-size: 1.3rem; filter: drop-shadow(0 2px 6px var(--primary-ring)); }
.brand span { background: linear-gradient(120deg, var(--primary), var(--rose-400)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: .25rem; flex-wrap: wrap; }
.nav-links a { color: var(--text-muted); font-weight: 600; font-size: .92rem; padding: .5rem .7rem; border-radius: var(--r-sm); }
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-links a.active { color: var(--primary); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); color: var(--text); font-size: 1.1rem; cursor: pointer; border-radius: var(--r-sm); width: 40px; height: 40px; }
.inline-form { display: inline; }
.linklike { background: none; border: none; color: var(--text-muted); font: inherit; font-weight: 600; font-size: .92rem; cursor: pointer; padding: .5rem .7rem; border-radius: var(--r-sm); }
.linklike:hover { color: var(--text); background: var(--surface-2); }

.theme-toggle {
    width: 40px; height: 40px; border-radius: var(--r-sm);
    border: 1px solid var(--border); background: var(--surface); color: var(--text);
    cursor: pointer; font-size: 1.05rem; display: inline-grid; place-items: center;
    transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.theme-toggle:hover { transform: rotate(-12deg); border-color: var(--primary); }

/* ============================================================= Buttons */
.btn {
    --btn-bg: var(--surface);
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    padding: .72rem 1.35rem; border-radius: var(--r-pill); font-weight: 700; font-size: .95rem;
    border: 1px solid transparent; cursor: pointer; text-decoration: none; white-space: nowrap;
    transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: none; box-shadow: var(--shadow-glow); }
.btn-primary { background: linear-gradient(120deg, var(--primary), var(--rose-500)); color: var(--on-primary); box-shadow: var(--shadow-md); }
.btn-primary:hover { box-shadow: var(--shadow-lg); color: var(--on-primary); }
.btn-outline { background: var(--surface); border-color: var(--border-strong); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost { background: var(--primary-soft); color: var(--primary-strong); }
.btn-ghost:hover { background: color-mix(in srgb, var(--primary) 16%, var(--primary-soft)); color: var(--primary-strong); }
.btn-sm { padding: .45rem .9rem; font-size: .85rem; }
.btn-lg { padding: .9rem 1.8rem; font-size: 1.05rem; }
.btn[disabled] { opacity: .55; pointer-events: none; }
.cta-row { display: flex; gap: var(--sp-3); flex-wrap: wrap; margin-top: var(--sp-4); }

/* ============================================================= Cards / grid */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: var(--sp-5);
    box-shadow: var(--shadow-sm);
    transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease);
}
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.card-lead { display: flex; align-items: center; gap: .6rem; }
.card-icon { font-size: 1.5rem; display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: var(--r-md); background: var(--primary-soft); }

.grid { display: grid; gap: var(--sp-4); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.split { display: grid; grid-template-columns: 1.15fr .85fr; gap: var(--sp-5); align-items: start; }
.split > * { min-width: 0; }
.grid > * { min-width: 0; }

/* ============================================================= Hero */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--border); }
.hero::before {
    content: ""; position: absolute; inset: 0; z-index: 0;
    background:
        radial-gradient(60% 80% at 80% 0%, color-mix(in srgb, var(--primary) 22%, transparent), transparent 70%),
        radial-gradient(50% 70% at 0% 100%, color-mix(in srgb, var(--rose-400) 18%, transparent), transparent 70%);
    animation: heroShift 16s var(--ease) infinite alternate;
}
.hero-inner { position: relative; z-index: 1; max-width: var(--container); margin: 0 auto; padding: var(--sp-8) var(--gutter); display: grid; grid-template-columns: 1.1fr .9fr; gap: var(--sp-6); align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 1.5rem + 3vw, 3.4rem); }
.hero h1 .grad { background: linear-gradient(120deg, var(--primary), var(--rose-400)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { font-size: 1.1rem; color: var(--text-muted); max-width: 46ch; }
.hero-art { font-size: clamp(6rem, 4rem + 12vw, 12rem); text-align: center; animation: float 6s ease-in-out infinite; filter: drop-shadow(0 30px 50px var(--primary-ring)); }

/* ============================================================= Stats / metrics */
.stat {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
    padding: var(--sp-5); text-align: center; box-shadow: var(--shadow-sm);
}
.stat .value { font-family: var(--font-display); font-size: 2rem; font-weight: 800; color: var(--primary); letter-spacing: -.02em; }
.stat .label { color: var(--text-muted); font-size: .85rem; font-weight: 600; }
.stat .sub { color: var(--text-faint); font-size: .78rem; }

.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: var(--sp-3); }
.metric {
    background: linear-gradient(180deg, var(--surface-2), var(--surface));
    border: 1px solid var(--border); border-radius: var(--r-md); padding: var(--sp-4); text-align: center;
}
.metric .n { font-family: var(--font-display); font-size: 1.9rem; font-weight: 800; color: var(--text); line-height: 1; }
.metric.is-primary .n { color: var(--primary); }
.metric .t { font-size: .72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .08em; margin-top: .35rem; }

/* ============================================================= Chips / segmented / toggle */
.chips { display: flex; gap: .4rem; flex-wrap: wrap; }
.chip {
    border: 1px solid var(--border); background: var(--surface); border-radius: var(--r-pill);
    padding: .42rem 1rem; cursor: pointer; font: inherit; font-size: .88rem; font-weight: 600; color: var(--text-muted);
    transition: all var(--dur) var(--ease);
}
.chip:hover { color: var(--text); border-color: var(--border-strong); }
.chip.active { background: var(--primary); color: var(--on-primary); border-color: var(--primary); box-shadow: var(--shadow-md); }

.segmented { display: inline-flex; padding: 4px; background: var(--surface-inset); border: 1px solid var(--border); border-radius: var(--r-pill); gap: 2px; flex-wrap: wrap; }
.segmented button, .segmented a {
    border: none; background: none; font: inherit; font-weight: 700; font-size: .85rem; color: var(--text-muted);
    padding: .45rem .95rem; border-radius: var(--r-pill); cursor: pointer; text-decoration: none;
    transition: all var(--dur) var(--ease);
}
.segmented button:hover, .segmented a:hover { color: var(--text); }
.segmented button.active, .segmented a.active { background: var(--surface); color: var(--primary); box-shadow: var(--shadow-sm); }

.switch { position: relative; display: inline-flex; align-items: center; gap: .6rem; cursor: pointer; }
.switch input { position: absolute; opacity: 0; }
.switch .track { width: 46px; height: 26px; border-radius: var(--r-pill); background: var(--border-strong); transition: background var(--dur) var(--ease); flex: none; }
.switch .track::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: var(--shadow-sm); transition: transform var(--dur) var(--ease-out); }
.switch input:checked + .track { background: var(--primary); }
.switch input:checked + .track::after { transform: translateX(20px); }

/* ============================================================= Forms */
label { display: block; font-weight: 600; margin-bottom: .35rem; font-size: .9rem; }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
    width: 100%; padding: .7rem .85rem; border: 1px solid var(--border-strong); border-radius: var(--r-md);
    font: inherit; background: var(--surface); color: var(--text); transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-ring); }
.field { margin-bottom: var(--sp-4); }
.form-narrow { max-width: 440px; margin: 0 auto; }
.error-text { color: var(--danger); font-size: .82rem; margin-top: .3rem; }

.alert { padding: .8rem 1rem; border-radius: var(--r-md); margin-bottom: var(--sp-4); border: 1px solid transparent; font-size: .92rem; }
.alert-success { background: var(--success-bg); color: var(--success); border-color: var(--success-border); }
.alert-error { background: var(--danger-bg); color: var(--danger); border-color: var(--danger-border); }

/* ============================================================= Tables */
.table-wrap { overflow-x: auto; border-radius: var(--r-lg); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .8rem .9rem; border-bottom: 1px solid var(--border); font-size: .92rem; }
thead th { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--text-faint); background: var(--surface-2); }
tbody tr { transition: background var(--dur) var(--ease); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--surface-2); }
.rank-1 { color: #B8860B; font-weight: 800; }
.rank-2 { color: #8A8A8A; font-weight: 800; }
.rank-3 { color: #A0522D; font-weight: 800; }

/* ============================================================= Badges / pills */
.badge { display: inline-flex; align-items: center; gap: .35rem; padding: .25rem .6rem; border-radius: var(--r-pill); font-size: .75rem; font-weight: 700; background: var(--primary-soft); color: var(--primary-strong); }
.badge-muted { background: var(--surface-2); color: var(--text-muted); }
.badge-live { background: var(--danger-bg); color: var(--danger); }

/* level bar */
.levelbar { display: flex; align-items: center; gap: .8rem; }
.levelbar .lv { font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; color: var(--primary); }
.progress { flex: 1; height: 10px; background: var(--surface-inset); border-radius: var(--r-pill); overflow: hidden; border: 1px solid var(--border); }
.progress > span { display: block; height: 100%; width: 0; border-radius: var(--r-pill);
    background: linear-gradient(90deg, var(--rose-400), var(--primary)); transition: width .6s var(--ease-out); }

/* streak flame */
.flame { font-size: 1.4rem; animation: flicker 1.6s ease-in-out infinite; }
.streak-num { font-family: var(--font-display); font-weight: 800; font-size: 1.6rem; }

/* goal ring */
.ring { --p: 0; --size: 108px; width: var(--size); height: var(--size); border-radius: 50%;
    background: conic-gradient(var(--primary) calc(var(--p) * 1%), var(--surface-inset) 0);
    display: grid; place-items: center; }
.ring::before { content: ""; position: absolute; width: calc(var(--size) - 22px); height: calc(var(--size) - 22px); border-radius: 50%; background: var(--surface); }
.ring .ring-label { position: relative; text-align: center; }
.ring .ring-label b { font-family: var(--font-display); font-size: 1.3rem; display: block; }

/* achievements */
.ach-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: var(--sp-3); }
.ach {
    border: 1px solid var(--border); border-radius: var(--r-lg); padding: var(--sp-4); text-align: center;
    background: var(--surface); transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease);
}
.ach.locked { opacity: .5; filter: grayscale(.7); }
.ach.unlocked:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.ach .ico { font-size: 2.2rem; }
.ach .nm { font-weight: 800; font-family: var(--font-display); margin-top: .3rem; }
.ach .ds { font-size: .8rem; color: var(--text-muted); }

/* podium */
.podium { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-3); align-items: end; margin-bottom: var(--sp-5); }
.podium .step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: var(--sp-4); text-align: center; box-shadow: var(--shadow-sm); }
.podium .step .who { font-weight: 800; font-family: var(--font-display); }
.podium .step .score { color: var(--primary); font-weight: 800; font-size: 1.4rem; font-family: var(--font-display); }
.podium .p1 { transform: translateY(-14px); border-color: var(--primary); }
.podium .medal { font-size: 1.6rem; }

/* toast (achievement unlocks) */
.toast-wrap { position: fixed; right: 18px; bottom: 18px; z-index: 100; display: flex; flex-direction: column; gap: 10px; }
.toast {
    display: flex; align-items: center; gap: .7rem; background: var(--surface); border: 1px solid var(--border-strong);
    border-radius: var(--r-md); padding: .8rem 1rem; box-shadow: var(--shadow-lg); min-width: 240px;
    animation: toastIn .4s var(--ease-out);
}
.toast .ico { font-size: 1.6rem; }
.toast .t-title { font-weight: 800; font-family: var(--font-display); font-size: .95rem; }
.toast .t-sub { font-size: .8rem; color: var(--text-muted); }

/* ============================================================= Footer */
.site-footer { margin-top: var(--sp-8); border-top: 1px solid var(--border); background: var(--bg-elev); }
.footer-inner { max-width: var(--container); margin: 0 auto; padding: var(--sp-6) var(--gutter); display: flex; justify-content: space-between; gap: var(--sp-6); flex-wrap: wrap; }
.footer-inner strong { font-family: var(--font-display); }
.footer-links { display: grid; gap: .4rem; }
.footer-links a { color: var(--text-muted); font-size: .9rem; }
.footer-note { text-align: center; padding-bottom: var(--sp-5); margin: 0; color: var(--text-faint); font-size: .82rem; }

/* ============================================================= Reveal / motion */
.reveal { opacity: 0; transform: translateY(16px); }
.reveal.in { opacity: 1; transform: none; transition: opacity .5s var(--ease-out), transform .5s var(--ease-out); }
.reveal.d1 { transition-delay: .05s; }
.reveal.d2 { transition-delay: .1s; }
.reveal.d3 { transition-delay: .15s; }
.reveal.d4 { transition-delay: .2s; }

@keyframes float { 0%, 100% { transform: translateY(0) rotate(-3deg); } 50% { transform: translateY(-18px) rotate(3deg); } }
@keyframes heroShift { 0% { transform: translate3d(0, 0, 0) scale(1); } 100% { transform: translate3d(0, -14px, 0) scale(1.06); } }
@keyframes flicker { 0%, 100% { transform: scale(1) rotate(-3deg); } 50% { transform: scale(1.12) rotate(3deg); } }
@keyframes toastIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }
@keyframes pop { 0% { transform: scale(.8); opacity: 0; } 60% { transform: scale(1.06); } 100% { transform: scale(1); opacity: 1; } }
.pop { animation: pop .35s var(--ease-out); }

/* ============================================================= Responsive */
@media (max-width: 900px) {
    .split { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .hero-inner { grid-template-columns: 1fr; text-align: center; }
    .hero .lead { margin-inline: auto; }
    .hero-art { display: none; }
}
@media (max-width: 680px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .nav-toggle { display: inline-grid; place-items: center; }
    .nav-links { display: none; width: 100%; flex-direction: column; align-items: stretch; padding-top: .5rem; }
    .nav-links.open { display: flex; }
    .nav-links a, .linklike { padding: .7rem .6rem; }
    .podium { grid-template-columns: 1fr; }
    .podium .p1 { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}