/*
    Gym CSS Styles — full-width header + hero + puzzle card grid.
    See __devel/_archive/design_handoff_ui_redesign/README.md and public/css/tokens.css.
*/

.gym-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg-page);
}

.gym-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 40px;
    border-bottom: 1px solid var(--border-subtle);
    background: var(--surface-header);
}

.gym-header-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.gym-header-logo {
    width: 30px;
    height: 30px;
}

.gym-header-title {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
}

.gym-body {
    flex: 1;
}

.gym-footer {
    padding: 12px 40px 18px;
    text-align: center;
    font-size: 12px;
    color: var(--text-label);
    background-color: #FFFFFF;
}

.gym-btn {
    font-size: 13px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: var(--radius-btn);
    border: none;
    cursor: pointer;
}

.gym-btn-clay {
    background: var(--accent-clay);
    color: #fff;
}

/* Hero banner */

.gym-hero-wrap {
    padding: 18px 40px 0;
}

.gym-hero {
    background: var(--accent-sage-tint-banner);
    border-radius: var(--radius-card);
    padding: 20px 36px 12px;
    max-width: 1240px;
    margin: 0 auto;
}

.gym-hero-title {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.gym-hero-body {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 95%;
    margin: 0 auto;
}

/* Puzzle grid */

.gym-puzzle-groups {
    max-width: 1240px;
    margin: 0 auto;
    padding: 24px 40px 16px;
    box-sizing: border-box;
    width: 100%;
}

.puzzle-section-label {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--text-label);
    margin-bottom: 14px;
}

.puzzle-section-label:not(:first-child) {
    margin-top: 32px;
}

.puzzle-grid {
    display: grid;
    gap: 18px;
}

.puzzle-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.puzzle-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.puzzle-card {
    border: 1px solid var(--border-card);
    border-radius: var(--radius-card);
    padding: 24px;
    background: var(--surface-card);
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: border-color 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.puzzle-card:hover {
    border-color: rgba(43, 43, 40, .25);
    box-shadow: 0 2px 8px rgba(43, 43, 40, .06);
}

.puzzle-card.active {
    border-color: var(--accent-clay);
    background: var(--accent-clay-tint);
}

.puzzle-card-icon {
    width: 32px;
    height: 32px;
}

.puzzle-card-icon.tint-sage {
    background-color: var(--accent-sage);
}

.puzzle-card-icon.tint-clay {
    background-color: var(--accent-clay);
}

.puzzle-card-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 18px;
    color: var(--text-primary);
}

.puzzle-card-desc {
    font-size: 13px;
    color: var(--text-secondary-muted);
}

/* Responsive: collapse grids on narrow widths — the gym screen is explicitly
   designed to work down to phone widths, no sidebar to hide/collapse. */

@media (max-width: 900px) {
    .puzzle-grid-3,
    .puzzle-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 520px) {
    .gym-header {
        padding: 14px 20px;
    }

    .gym-hero-wrap {
        padding: 20px 20px 0;
    }

    .gym-hero {
        padding: 24px 20px;
    }

    .gym-puzzle-groups {
        padding: 20px 20px 32px;
    }

    .puzzle-grid-3,
    .puzzle-grid-4 {
        grid-template-columns: 1fr;
    }
}