:root {
    --clr-bg: #f5f6fa;
    --clr-surface: #ffffff;
    --clr-primary: #4f46e5;
    --clr-primary-light: #eef2ff;
    --clr-text: #1e293b;
    --clr-muted: #64748b;
    --clr-border: #e2e8f0;
    --clr-accent-green: #16a34a;
    --clr-accent-orange: #ea580c;
    --clr-accent-red: #dc2626;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
    --shadow-lg: 0 4px 12px rgba(0,0,0,.1);
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', -apple-system, BlazorSystemFont, sans-serif;
    background: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--clr-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.site-header {
    background: var(--clr-surface);
    border-bottom: 1px solid var(--clr-border);
    padding: 0.75rem 1.5rem;
    padding-top: calc(0.75rem + var(--safe-top));
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-header .logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--clr-primary);
    letter-spacing: -0.025em;
}

.site-header nav { display: flex; gap: 1.5rem; }

.site-header nav a {
    color: var(--clr-muted);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.15s;
}
.site-header nav a:hover,
.site-header nav a.active { color: var(--clr-primary); text-decoration: none; }

.content-area {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
    padding-bottom: calc(1.5rem + var(--safe-bottom));
}

/* Filters Bar */
.filters-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.filters-bar input[type="search"],
.filters-bar select {
    border: 1px solid var(--clr-border);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    background: var(--clr-surface);
    color: var(--clr-text);
    outline: none;
    transition: border-color 0.15s;
}
.filters-bar input[type="search"]:focus,
.filters-bar select:focus {
    border-color: var(--clr-primary);
}
.filters-bar input[type="search"] {
    flex: 1;
    min-width: 200px;
}

/* Tag filter (multi-select chips) */
.tag-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
}

.tag-chip {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.75rem;
    border: 1px solid var(--clr-border);
    border-radius: 999px;
    background: var(--clr-surface);
    color: var(--clr-muted);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.tag-chip:hover {
    border-color: var(--clr-primary);
    color: var(--clr-primary);
}
.tag-chip-active {
    background: var(--clr-primary);
    color: #fff;
    border-color: var(--clr-primary);
}
.tag-chip-active:hover {
    background: #4338ca;
    color: #fff;
}
.tag-chip-clear {
    color: var(--clr-accent-red);
    border-color: transparent;
    background: transparent;
}
.tag-chip-clear:hover {
    color: var(--clr-accent-red);
    border-color: var(--clr-accent-red);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
}

.card {
    background: var(--clr-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s, transform 0.2s;
    cursor: pointer;
}
.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background: var(--clr-border);
}

.card-body {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.card-prizes {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-conditions {
    font-size: 0.85rem;
    color: var(--clr-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: auto;
    padding-top: 0.5rem;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--clr-primary-light);
    color: var(--clr-primary);
}
.tag-big { background: #fef3c7; color: #92400e; }
.tag-promo { background: #fce7f3; color: #9d174d; }
.tag-ends { background: #fee2e2; color: var(--clr-accent-red); }
.tag-country { background: #ecfdf5; color: var(--clr-accent-green); }

/* Detail Page */
.detail-page {
    max-width: 800px;
    margin: 0 auto;
}

.detail-page .hero-img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

.detail-page h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.detail-section {
    background: var(--clr-surface);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
}

.detail-section h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--clr-muted);
    margin-bottom: 0.5rem;
}

.detail-meta {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
}

.detail-meta dt {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--clr-muted);
}
.detail-meta dd {
    font-weight: 500;
    margin: 0;
}

.btn-primary {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    border: none;
    border-radius: 8px;
    background: var(--clr-primary);
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.15s;
}
.btn-primary:hover { background: #4338ca; color: #fff; text-decoration: none; }

.btn-outline {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    border: 1px solid var(--clr-border);
    border-radius: 8px;
    background: var(--clr-surface);
    color: var(--clr-text);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: border-color 0.15s;
}
.btn-outline:hover { border-color: var(--clr-primary); color: var(--clr-primary); text-decoration: none; }

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
}
.pagination button {
    padding: 0.4rem 1rem;
    border: 1px solid var(--clr-border);
    border-radius: 8px;
    background: var(--clr-surface);
    color: var(--clr-text);
    cursor: pointer;
    font-size: 0.85rem;
}
.pagination button:disabled { opacity: 0.4; cursor: default; }
.pagination span { color: var(--clr-muted); font-size: 0.85rem; }

/* Loading */
.loading-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    gap: 1rem;
}
.loading-screen p { color: var(--clr-primary); font-weight: 600; font-size: 1.5rem; }

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--clr-border);
    border-top-color: var(--clr-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.spinner-inline {
    display: flex;
    justify-content: center;
    padding: 3rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--clr-muted);
}
.empty-state p { font-size: 1.1rem; }

/* Back link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    color: var(--clr-muted);
    margin-bottom: 1rem;
}
.back-link:hover { color: var(--clr-primary); }

/* Responsive */
@media (max-width: 640px) {
    .content-area { padding: 1rem; padding-bottom: calc(1rem + var(--safe-bottom)); }
    .cards-grid { grid-template-columns: 1fr; }
    .filters-bar { flex-direction: column; }
    .filters-bar input[type="search"] { width: 100%; }
    .site-header { padding: 0.5rem 1rem; padding-top: calc(0.5rem + var(--safe-top)); }
    .site-header nav { gap: 1rem; }
}

/* Error UI */
#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 0.75rem; top: 0.5rem; }