/* ═══════════════════════════════════════════
   FROG NOGGIN — Component System
   .fn-box, .fn-btn, .fn-rule, .fn-page-header
   ═══════════════════════════════════════════ */

/* ── Box System ── */
/* SVG wobbly borders drawn by fn-boxes.js (wobblyBoxPath) */

.fn-box {
    position: relative;
    background: transparent;
    border: none;
    padding: 1.5rem;
    transition: transform 0.2s ease;
}

.fn-box > *:not(.fn-box-border) {
    position: relative;
}

.fn-box h1,
.fn-box h2,
.fn-box h3,
.fn-box h4,
.fn-box h5,
.fn-box h6 {
    font-family: var(--fn-font-body);
}

/* ── Box Variants ── */

.fn-box--muted {
    opacity: 0.65;
    cursor: default;
}

.fn-box--flat {
    cursor: default;
}

/* ── Button System ── */

.fn-btn {
    font-family: var(--fn-font-body);
    font-size: 1rem;
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--fn-ink);
    border-radius: var(--fn-shape-a);
    background: var(--fn-surface);
    color: var(--fn-ink);
    cursor: pointer;
    transition: all 0.15s ease;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    line-height: 1.4;
}

.fn-btn:hover {
    transform: translate(-1px, -1px);
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.1);
}

.fn-btn:active {
    transform: translate(1px, 1px);
    box-shadow: none;
}


/* Button Variants */

.fn-btn--primary {
    background: var(--fn-accent);
    font-weight: bold;
}

.fn-btn--check {
    background: #b5e4b5;
    font-weight: bold;
}

.fn-btn--ghost {
    background: transparent;
    border-color: transparent;
}

.fn-btn--ghost:hover {
    border-color: var(--fn-border-light);
}

.fn-btn--danger {
    background: var(--fn-error);
    color: white;
    border-color: var(--fn-error);
}

.fn-btn--danger:hover {
    background: #dc2626;
}

/* Button Sizes */

.fn-btn--sm {
    font-size: 0.85rem;
    padding: 0.25rem 0.75rem;
    min-height: 32px;
}

.fn-btn--lg {
    font-size: 1.2rem;
    padding: 0.75rem 2rem;
}

/* ── Horizontal Rule ── */

.fn-rule {
    border: none;
    height: 1px;
    background: var(--fn-border-light);
    width: 80%;
    margin: 0.75rem auto;
}

/* ── Page Header ── */

.fn-page-header {
    text-align: center;
    margin-bottom: 2rem;
}

.fn-page-header h1,
.fn-page-header h2 {
    font-family: var(--fn-font-heading);
    color: var(--fn-ink);
    margin: 0;
}

.fn-page-header h1::after,
.fn-page-header h2::after {
    content: '';
    display: block;
    width: min(80%, 500px);
    height: 2px;
    background: var(--fn-ink);
    margin: 0.5rem auto 0;
}

/* ── Card Grid Layouts ── */

.fn-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
}

/* Level card completed state — fill/stroke handled by fn-boxes.js via class */

.fn-card-grid--compact {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 0.75rem;
}