/* =============================================================================
   CASE STUDIES ARCHIVE — archive-case-studies.php
   Design System: dark (#111827) + lime (#beea07) + Bricolage Grotesque
   Prefix: cs-
   ============================================================================= */


/* =============================================================================
   0. WRAPPER
   ============================================================================= */

.cs-page {
    background: var(--color-secondary);
    min-height: 100vh;
}


/* =============================================================================
   1. HERO
   ============================================================================= */

.cs-hero {
    position: relative;
    padding: calc(var(--header-height) + var(--space-20)) 0 0;
    background: var(--color-secondary);
    overflow: hidden;
    color: var(--color-white);
}

.cs-hero__bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 65% 50% at 50% -10%, rgba(190, 234, 7, 0.09) 0%, transparent 68%),
        radial-gradient(ellipse 28% 35% at 92% 80%, rgba(99, 102, 241, 0.05) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.cs-hero .container {
    position: relative;
    z-index: 1;
}

.cs-hero__inner {
    padding-bottom: var(--space-14);
}

.cs-hero__eyebrow {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin: 0 0 var(--space-5);
}

.cs-hero__title {
    font-family: var(--font-family-heading);
    font-size: clamp(2.75rem, 7vw, 5.5rem);
    font-weight: var(--font-weight-extrabold);
    line-height: 1.02;
    color: var(--color-white);
    margin: 0 0 var(--space-6);
}

.cs-hero__accent {
    color: var(--color-primary);
    font-style: normal;
}

.cs-hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-400);
    line-height: var(--line-height-relaxed);
    max-width: 520px;
    margin: 0;
}

/* Stats bar */
.cs-hero__stats {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-8) 0;
    border-top: 1px solid var(--color-gray-800);
}

.cs-hero__stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.cs-hero__stat-num {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
    line-height: 1;
}

.cs-hero__stat-label {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.cs-hero__stat-sep {
    width: 1px;
    height: 40px;
    background: var(--color-gray-700);
    flex-shrink: 0;
}


/* =============================================================================
   2. FILTRO — Pills sticky
   ============================================================================= */

.cs-filter {
    position: sticky;
    top: var(--header-height);
    z-index: calc(var(--z-sticky) - 1);
    background: var(--color-black);
    border-bottom: 1px solid var(--color-gray-800);
    padding: var(--space-4) 0;
}

.cs-filter .container {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.cs-filter__pills {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
    flex: 1;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.cs-filter__pills::-webkit-scrollbar {
    display: none;
}

.cs-filter__pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-400);
    background: transparent;
    border: 1px solid var(--color-gray-800);
    border-radius: 100px;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
    transition:
        color var(--transition-fast),
        background var(--transition-fast),
        border-color var(--transition-fast);
}

.cs-filter__pill:hover {
    color: var(--color-white);
    border-color: var(--color-gray-600);
    background: rgba(255, 255, 255, 0.04);
}

.cs-filter__pill.is-active {
    color: var(--color-black);
    background: var(--color-primary);
    border-color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.cs-filter__pill-count {
    font-family: var(--font-family-mono);
    font-size: 0.65rem;
    opacity: 0.6;
}

.cs-filter__pill.is-active .cs-filter__pill-count {
    opacity: 0.65;
}

.cs-filter__count {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin: 0;
    flex-shrink: 0;
    white-space: nowrap;
}

.cs-filter__count strong {
    color: var(--color-gray-300);
    font-weight: var(--font-weight-bold);
}


/* =============================================================================
   3. CONTENIDO
   ============================================================================= */

.cs-content {
    padding: var(--space-12) 0 var(--space-24);
}


/* =============================================================================
   4. GRID
   ============================================================================= */

.cs-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-5);
}

@media (min-width: 640px) {
    .cs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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


/* =============================================================================
   5. TARJETA
   ============================================================================= */

.cs-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition:
        transform var(--transition-base),
        border-color var(--transition-base),
        box-shadow var(--transition-base);
}

.cs-card:hover {
    transform: translateY(-6px);
    border-color: rgba(190, 234, 7, 0.22);
    box-shadow:
        0 24px 48px rgba(0, 0, 0, 0.45),
        0 0 0 1px rgba(190, 234, 7, 0.07);
}

/* Tarjeta destacada */
.cs-card--featured {
    grid-column: span 1;
}

@media (min-width: 640px) {
    .cs-card--featured {
        grid-column: span 2;
    }

    .cs-card--featured .cs-card__thumb {
        aspect-ratio: 16 / 7;
    }

    .cs-card--featured .cs-card__title {
        font-size: var(--font-size-2xl);
    }
}

/* Thumbnail */
.cs-card__thumb {
    display: block;
    position: relative;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--color-gray-800);
    flex-shrink: 0;
}

.cs-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cs-card:hover .cs-card__img {
    transform: scale(1.06);
}

.cs-card__placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(190, 234, 7, 0.02);
    color: var(--color-gray-700);
}

/* Overlay */
.cs-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(17, 24, 39, 0) 20%,
        rgba(17, 24, 39, 0.85) 100%
    );
    display: flex;
    align-items: flex-end;
    padding: var(--space-5);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.cs-card:hover .cs-card__overlay {
    opacity: 1;
}

.cs-card__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
}

.cs-card__cta svg {
    transition: transform var(--transition-fast);
}

.cs-card:hover .cs-card__cta svg {
    transform: translateX(3px);
}

/* Badge número proyectos */
.cs-card__proj-badge {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-family: var(--font-family-mono);
    font-size: 0.6rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.06em;
    color: var(--color-black);
    background: var(--color-primary);
    border-radius: var(--border-radius-sm);
    padding: 3px 8px;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Body */
.cs-card__body {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-5);
    flex-grow: 1;
    position: relative;
}

.cs-card__title-link::after {
    content: '';
    position: absolute;
    inset: 0;
    top: -999px;
}

.cs-card__industry {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.cs-card__title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin: 0;
}

.cs-card__title-link {
    color: var(--color-white);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.cs-card:hover .cs-card__title-link {
    color: var(--color-primary);
}

.cs-card__excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    line-height: var(--line-height-relaxed);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}


/* =============================================================================
   6. PAGINACIÓN
   ============================================================================= */

.cs-pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--space-14);
}

.cs-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-width: 42px;
    height: 42px;
    padding: 0 var(--space-3);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-400);
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: var(--border-radius-base);
    text-decoration: none;
    transition:
        color var(--transition-fast),
        background var(--transition-fast),
        border-color var(--transition-fast);
}

.cs-pagination .page-numbers:hover {
    color: var(--color-primary);
    border-color: rgba(190, 234, 7, 0.3);
    background: rgba(190, 234, 7, 0.04);
}

.cs-pagination .page-numbers.current {
    color: var(--color-black);
    background: var(--color-primary);
    border-color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.cs-pagination .page-numbers.dots {
    background: transparent;
    border-color: transparent;
    color: var(--color-gray-600);
    pointer-events: none;
}

.cs-pagination .prev.page-numbers,
.cs-pagination .next.page-numbers {
    padding: 0 var(--space-4);
}


/* =============================================================================
   7. ESTADO VACÍO
   ============================================================================= */

.cs-empty {
    padding: var(--space-24) 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    color: var(--color-gray-500);
}

.cs-empty p {
    font-size: var(--font-size-lg);
    margin: 0;
}


/* =============================================================================
   8. RESPONSIVE
   ============================================================================= */

@media (max-width: 767px) {
    .cs-hero__title {
        font-size: clamp(2.25rem, 10vw, 3.5rem);
    }

    .cs-hero__subtitle {
        font-size: var(--font-size-base);
    }

    .cs-hero__stats {
        gap: var(--space-5);
        flex-wrap: wrap;
    }

    .cs-hero__stat-num {
        font-size: var(--font-size-3xl);
    }

    .cs-content {
        padding: var(--space-8) 0 var(--space-16);
    }

    .cs-filter .container {
        gap: var(--space-3);
    }

    .cs-filter__count {
        width: 100%;
    }

    .cs-grid {
        gap: var(--space-4);
    }
}

@media (min-width: 768px) {
    .cs-hero__subtitle {
        font-size: var(--font-size-xl);
    }
}