/* --- Base & Reset --- */
:root { /* This is the root element for the CSS variables (used for the custom colors) */
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-100: #f1f5f9;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --white: #ffffff;
    --green-700: #15803d;
    --green-800: #166534;
    --green-100: #dcfce7;
    --green-800-text: #166534;
    /* Accessibility Fix 3: Final contrast adjustments */
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-800: #1e40af;
    --sky-700: #0369a1;
    --sky-800: #075985;
    --emerald-700: #047857;
    --emerald-800: #065f46;
    --orange-700: #c2410c;
    --orange-800: #9a3412;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f3f4f6;
    color: var(--slate-800);
    margin: 0;
    line-height: 1.6;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

/* --- Header & Search --- */
.header {
    background: linear-gradient(135deg, var(--slate-800), var(--slate-900));
    color: var(--white);
    padding: 3rem 0;
    text-align: center;
}

.header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    margin: 0 0 0.75rem;
    text-wrap: balance;
}

.header p {
    font-size: 1.125rem;
    color: var(--slate-300);
    max-width: 42rem;
    margin: 0 auto 2rem;
    text-wrap: pretty;
}

.search-container {
    position: relative;
    max-width: 36rem;
    margin: 0 auto;
}

.search-icon {
    position: absolute;
    top: 50%;
    left: 1rem;
    transform: translateY(-50%);
    pointer-events: none;
}

#search-box {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border-radius: 9999px;
    background-color: var(--slate-700);
    color: var(--white);
    border: 2px solid transparent;
    font-size: 1rem;
    transition: border-color 0.2s ease-in-out;
}

#search-box:focus {
    outline: none;
    border-color: var(--blue-600);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.3);
}

#search-box::placeholder {
    color: var(--slate-400);
}

/* --- Validation Bar --- */
.validation-bar {
    background-color: var(--green-100);
    color: var(--green-800-text);
    padding: 1rem;
    text-align: center;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.validation-bar svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* --- Promo Grid --- */
main {
    padding: 2rem 1rem;
}

#promo-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 1.5rem;
}

/* --- Promo Card --- */
.promo-card {
    background-color: var(--white);
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    text-align: center;
    /* Design Change: Centered text */
    border-top: 4px solid transparent;
}

.promo-card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.promo-card h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--slate-900);
    margin: 0;
    text-wrap: balance;
}

.promo-card p {
    color: var(--slate-600);
    margin-top: 0.5rem;
    margin-bottom: 0;
    text-wrap: pretty;
}

/* Card Filtering Transition */
.promo-card.hidden-transition {
    transition: opacity 0.3s ease-out, transform 0.3s ease-out, height 0.3s ease-out, padding 0.3s ease-out, margin 0.3s ease-out;
    opacity: 0;
    transform: scale(0.95);
    height: 0;
    padding: 0;
    margin: 0;
    overflow: hidden;
}

/* --- Action Button --- */
.action-btn {
    display: block;
    width: 100%;
    font: inherit; /* <button> copy-code variants don't inherit the page font by default */
    font-weight: 700;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-top: 1.5rem;
    text-align: center;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.action-btn:active {
    transform: scale(0.95);
}

/* Button Colors (with accessibility contrast fixes) */
.bg-sky-700 {
    background-color: var(--sky-700);
    color: var(--white);
}

.bg-sky-700:hover {
    background-color: var(--sky-800);
}

.bg-slate-800 {
    background-color: var(--slate-800);
    color: var(--white);
}

.bg-slate-800:hover {
    background-color: var(--slate-900);
}

.bg-emerald-700 {
    background-color: var(--emerald-700);
    color: var(--white);
}

.bg-emerald-700:hover {
    background-color: var(--emerald-800);
}

.bg-blue-700 {
    background-color: var(--blue-700);
    color: var(--white);
}

.bg-blue-700:hover {
    background-color: var(--blue-800);
}

.bg-green-700 {
    background-color: var(--green-700);
    color: var(--white);
}

.bg-green-700:hover {
    background-color: var(--green-800);
}

.bg-orange-700 {
    background-color: var(--orange-700);
    color: var(--white);
}

.bg-orange-700:hover {
    background-color: var(--orange-800);
}

/* --- New Visit Link Style --- */
.visit-link {
    display: inline-block;
    color: var(--blue-700);
    text-decoration: underline;
    font-weight: 500;
    margin-top: 0.75rem;
    font-size: 0.9rem;
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
}

/* --- Category Tag --- */
.category-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.2rem 0.6rem;
    border-radius: 9999px;
    background-color: var(--slate-100);
    color: var(--slate-500);
    margin-bottom: 0.6rem;
}

/* --- Card Top Accent Border --- */
.card-accent-sky    { border-top-color: var(--sky-700); }
.card-accent-slate  { border-top-color: var(--slate-700); }
.card-accent-emerald { border-top-color: var(--emerald-700); }
.card-accent-blue7  { border-top-color: var(--blue-700); }
.card-accent-green  { border-top-color: var(--green-700); }
.card-accent-orange { border-top-color: var(--orange-700); }

/* --- Footer --- */
footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--slate-700);
    /* Contrast Fix */
}

/* --- Accessibility & Utility --- */
.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* --- Card Details Link --- */
.details-link {
    display: inline-block;
    margin-top: 0.75rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--slate-600);
}

.details-link:hover {
    color: var(--slate-900);
}

/* --- Footer Deal Links --- */
.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 1.25rem;
    list-style: none;
    padding: 0 1rem;
    margin: 0 auto 1rem;
    max-width: 48rem;
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--slate-700);
}

.footer-note {
    font-size: 0.8rem;
    color: var(--slate-600);
    padding: 0 1rem;
    text-wrap: pretty;
}

/* --- Deal Pages --- */
.header-compact {
    padding: 2rem 0 2.5rem;
}

.header-compact p {
    margin-bottom: 0;
}

.breadcrumb {
    font-size: 0.9rem;
    color: var(--slate-400);
    margin-bottom: 1rem;
}

.breadcrumb a {
    color: var(--slate-300);
}

.deal-main {
    max-width: 48rem;
}

.offer-box .offer-amount {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--slate-900);
    margin: 0;
    text-wrap: balance;
}

.offer-box .checked-note {
    font-size: 0.85rem;
    color: var(--slate-500);
    margin-top: 1rem;
}

.deal-content {
    background-color: var(--white);
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.deal-content h2 {
    font-size: 1.35rem;
    color: var(--slate-900);
    margin: 2rem 0 0.5rem;
    text-wrap: balance;
}

.deal-content h2:first-child {
    margin-top: 0;
}

.deal-content h3 {
    font-size: 1.05rem;
    color: var(--slate-900);
    margin: 1.25rem 0 0.25rem;
    text-wrap: balance;
}

.deal-content p,
.deal-content li {
    color: var(--slate-700);
    text-wrap: pretty;
}

.deal-content p {
    margin: 0.5rem 0;
}

.deal-content ul,
.deal-content ol {
    padding-left: 1.25rem;
    margin: 0.5rem 0;
}

.deal-content li {
    margin: 0.35rem 0;
}

.deal-content a {
    color: var(--blue-700);
}

.related {
    margin-top: 2rem;
}

.related h2 {
    font-size: 1.25rem;
    color: var(--slate-900);
    text-align: center;
    margin: 0 0 1rem;
    text-wrap: balance;
}

.related-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.related-link {
    display: block;
    background-color: var(--white);
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 1rem 1.25rem;
    text-decoration: none;
    color: var(--slate-900);
    font-weight: 600;
}

.related-link:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.related-link span {
    display: block;
    font-weight: 400;
    font-size: 0.9rem;
    color: var(--slate-600);
}

/* --- Responsive Breakpoints --- */
@media (min-width: 768px) {
    .header {
        padding: 4rem 0;
    }

    .header-compact {
        padding: 2.5rem 0 3rem;
    }

    .deal-content {
        padding: 2rem 2.5rem;
    }

    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* build.py marks the last link when it would sit alone on its row */
    .related-solo {
        grid-column: 1 / -1;
        justify-self: center;
        width: calc(50% - 0.5rem);
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    /* build.py marks the last card when it would sit alone on its row */
    .solo-2 {
        grid-column: 1 / -1;
        justify-self: center;
        width: calc(50% - 0.75rem);
    }

    .header h1 {
        font-size: 3rem;
    }

    main {
        padding: 2rem;
    }

    #promo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    #promo-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* build.py marks the last card when it would sit alone on its row */
    .solo-3 {
        grid-column: 2;
    }
}