/* Stellar Brands Directory — Stylesheet
 * v4.0.4: Recreated from scratch — the previous css/stellar-brands.css had been
 *         overwritten with a stale copy of the plugin PHP (v4.0.0) and contained
 *         ZERO CSS rules, so the A-Z directory shipped unstyled whenever this file
 *         backed the shared `stellar-brands-style` handle.
 *
 *         Migrated onto the canonical Deal Design System (--ds-* tokens) with literal
 *         fallbacks, mirroring the brand-offers-feed / stellar-brands-category pattern.
 *         Shares the .stellar-brands-* class family + #stellar-brands-container markup
 *         with stellar-brands-category (same shortcode HTML, same letter-switch JS).
 *
 *         Contract preserved: every selector matches the HTML emitted by
 *         stellar-brands-directory.php and the .active / .sbd-loading classes toggled
 *         by js/stellar-brands.js. Additions are CSS-only: dark mode (via DS tokens),
 *         :focus-visible rings, prefers-reduced-motion, 44px touch targets, and
 *         Rule-1 inset-shadow "borders" on the circular letter nav.
 */

:root {
    --sbd-primary-color: var(--ds-money-solid, #0F766E);
    --sbd-primary-hover: var(--ds-money-solid-hover, #0B5C55);
    --sbd-page-bg: var(--ds-surface-2, #F5F7F9);
    --sbd-surface: var(--ds-surface, #FFFFFF);
    --sbd-text-color: var(--ds-ink, #1A2332);
    --sbd-muted-color: var(--ds-muted, #5C6A7F);
    --sbd-border-color: var(--ds-line, #E6E9EF);
    --sbd-disabled-color: var(--ds-faint, #8A94A6);
    --sbd-font-family: var(--ds-font, 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif);
    --sbd-card-shadow: var(--ds-shadow, 0 1px 2px rgba(16, 24, 40, 0.04), 0 4px 12px rgba(16, 24, 40, 0.05));
    --sbd-card-shadow-hover: 0 7px 25px rgba(16, 24, 40, 0.12);
    --sbd-focus-ring: 0 0 0 3px rgba(15, 118, 110, 0.30);
    --sbd-transition: 250ms cubic-bezier(0.25, 0.8, 0.25, 1);
}

#stellar-brands-container {
    font-family: var(--sbd-font-family);
    color: var(--sbd-text-color);
    background-color: var(--sbd-page-bg);
    padding: 2rem 1.5rem;
    border-radius: var(--ds-r-lg, 16px);
    margin: 2rem 0;
}

/* Rule 3: survive theme + Tailwind preflight (border-box also keeps the 4px
   accent stripe inside each grid track). */
#stellar-brands-container,
#stellar-brands-container * {
    box-sizing: border-box;
}

/* --- Navigation (A-Z letter chips) --- */
#stellar-brands-container .stellar-brands-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--sbd-border-color);
    margin-bottom: 2rem;
}

#stellar-brands-container .stellar-brands-nav a,
#stellar-brands-container .stellar-brands-nav span {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    /* 44px touch target (DESIGN_GUIDE mobile rule) */
    width: 44px;
    height: 44px;
    border-radius: 50%;
    transition: transform var(--sbd-transition),
                box-shadow var(--sbd-transition),
                background-color var(--sbd-transition),
                color var(--sbd-transition);
}

/* Rule 1: fake the 1px border with an inset box-shadow (no border + border-radius). */
#stellar-brands-container .stellar-brands-nav a {
    color: var(--sbd-primary-color);
    background-color: var(--sbd-surface);
    box-shadow: inset 0 0 0 1px var(--sbd-border-color);
}

#stellar-brands-container .stellar-brands-nav a:hover {
    background-color: var(--sbd-primary-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--sbd-card-shadow-hover);
}

#stellar-brands-container .stellar-brands-nav a.active {
    background-color: var(--sbd-primary-color);
    color: #fff;
    box-shadow: var(--sbd-focus-ring);
}

#stellar-brands-container .stellar-brands-nav a:focus-visible {
    outline: none;
    box-shadow: var(--sbd-focus-ring);
}

#stellar-brands-container .stellar-brands-nav span.disabled {
    color: var(--sbd-disabled-color);
    background-color: var(--sbd-surface);
    box-shadow: inset 0 0 0 1px var(--sbd-border-color);
    cursor: not-allowed;
    opacity: 0.7;
}

/* --- Content area --- */
#stellar-brands-container .stellar-brands-content {
    opacity: 1;
    transition: opacity 0.4s ease-in-out;
}

#stellar-brands-container .stellar-brands-content.sbd-loading {
    opacity: 0.5;
}

/* Sections are hidden by default; js/stellar-brands.js adds .active to the
   selected letter's section (and .active to its nav link). */
#stellar-brands-container .brand-list-section {
    display: none;
    animation: sbdFadeIn 0.5s ease-in-out forwards;
}

#stellar-brands-container .brand-list-section.active {
    display: block;
}

@keyframes sbdFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

#stellar-brands-container .brand-list-heading {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--sbd-text-color);
    margin-bottom: 1.5rem;
    text-align: left;
    min-height: 2.5rem;
}

#stellar-brands-container .brand-list-heading .brand-list-heading-letter {
    font-weight: 700;
    color: var(--sbd-primary-color);
}

#stellar-brands-container .sbd-no-brands-message {
    text-align: center;
    font-size: 1.1rem;
    color: var(--sbd-muted-color);
    padding: 2rem 0;
}

#stellar-brands-container .brand-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, 1fr);
}

#stellar-brands-container .brand-link {
    background-color: var(--sbd-surface);
    padding: 1rem;
    border-radius: var(--ds-r-sm, 8px);
    text-decoration: none;
    color: var(--sbd-text-color);
    font-weight: 500;
    font-size: 1rem;
    text-align: left;
    box-shadow: var(--sbd-card-shadow);
    border-left: 4px solid transparent;
    transition: transform 0.2s ease,
                box-shadow 0.2s ease,
                color 0.2s ease,
                border-left-color 0.2s ease;
}

#stellar-brands-container .brand-link:hover {
    transform: translateY(-4px);
    box-shadow: var(--sbd-card-shadow-hover);
    color: var(--sbd-primary-color);
    border-left-color: var(--sbd-primary-color);
}

#stellar-brands-container .brand-link:focus-visible {
    outline: none;
    box-shadow: var(--sbd-focus-ring);
    color: var(--sbd-primary-color);
    border-left-color: var(--sbd-primary-color);
}

/* --- Responsive --- */
@media (min-width: 768px) {
    #stellar-brands-container {
        padding: 2.5rem;
    }
    #stellar-brands-container .brand-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    #stellar-brands-container .brand-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    #stellar-brands-container .brand-list-heading {
        font-size: 2rem;
        min-height: 3rem;
    }
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
    #stellar-brands-container .stellar-brands-nav a,
    #stellar-brands-container .stellar-brands-nav span,
    #stellar-brands-container .stellar-brands-content,
    #stellar-brands-container .brand-link {
        transition: none;
    }
    #stellar-brands-container .brand-list-section {
        animation: none;
    }
    #stellar-brands-container .stellar-brands-nav a:hover,
    #stellar-brands-container .brand-link:hover {
        transform: none;
    }
}