/* webike — base styles per approved mockups.
   Brand: blue #1B9AD6, green #8CC63E, white background, rounded cards.
   No hard pixel values — rem / fr / min() only. Touch targets >= 2.75rem (44px). */

:root {
    --webike-blue: #1B9AD6;
    --webike-green: #8CC63E;
    --ink: #1e2a32;
    --ink-soft: #5b6b76;
    --surface: #ffffff;
    --surface-alt: #f4f8fb;
    --radius: 1rem;
    --touch: 2.75rem;
}

* { box-sizing: border-box; }

html { font-size: 100%; }

body {
    margin: 0;
    font-family: "Assistant", "Rubik", system-ui, sans-serif;
    color: var(--ink);
    background: var(--surface);
    line-height: 1.6;
}

.container {
    width: min(72rem, 100% - 2rem);
    margin-inline: auto;
    padding-block: 1.5rem;
}

/* ---- header ---- */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: min(72rem, 100% - 2rem);
    margin-inline: auto;
    padding-block: 0.75rem;
}

.brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--webike-blue);
    text-decoration: none;
}
.brand-dot { color: var(--webike-green); }

.site-nav { display: flex; gap: 0.5rem; }
.site-nav a {
    display: inline-flex;
    align-items: center;
    min-height: var(--touch);
    padding-inline: 0.75rem;
    color: var(--ink);
    text-decoration: none;
    border-radius: 0.5rem;
}
.site-nav a:hover { background: var(--surface-alt); }

/* ---- hero ---- */
.hero {
    background: linear-gradient(120deg, var(--webike-blue), var(--webike-green));
    color: #fff;
    border-radius: var(--radius);
    padding: clamp(1.5rem, 5vw, 3rem);
}
.hero h1 { margin: 0 0 0.5rem; font-size: clamp(1.75rem, 4vw, 2.75rem); }
.hero p { margin: 0; opacity: 0.95; }

/* ---- cards ---- */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(18rem, 100%), 1fr));
    gap: 1rem;
    margin-block-start: 1.5rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--surface-alt);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: 0 0.125rem 0.5rem rgb(27 154 214 / 0.08);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.card-title { margin: 0; font-size: 1.2rem; }

/* ---- buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--touch);
    padding-inline: 1.25rem;
    border-radius: 999rem;
    background: var(--webike-blue);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    align-self: start;
}
.btn:hover { filter: brightness(1.05); }
.btn-primary { background: var(--webike-green); }

/* ---- misc ---- */
.notice {
    background: var(--surface-alt);
    border-radius: 0.75rem;
    padding: 1rem;
    color: var(--ink-soft);
}

.activity-hero img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
}

.site-footer {
    text-align: center;
    color: var(--ink-soft);
    padding-block: 2rem;
    font-size: 0.9rem;
}

@media (orientation: portrait) {
    .site-header { flex-wrap: wrap; }
}