/**
 * TSW Case Studies Page Styles
 *
 * Ported from static site, adapted for theme CSS variables.
 * Used on: archive-tsw_case_study.php, single-tsw_case_study.php,
 * template-case-studies.php
 *
 * @package TSW
 * @since   1.0.0
 */

/* ============ HERO ============ */
.cs-hero {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(155deg, #111820 0%, #162230 35%, #1a3a25 70%, #234D20 100%);
    overflow: hidden;
}
.cs-hero-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}
.cs-hero-shapes .tsw-shape { opacity: 0.06; }

.cs-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 16px;
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--tsw-accent, #2ecc71);
    background: rgba(46, 204, 113, 0.12);
    border: 1px solid rgba(46, 204, 113, 0.2);
    border-radius: 50px;
    margin-bottom: 18px;
}
.cs-hero-title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    color: #fff;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 18px;
    max-width: 650px;
}
.cs-hero-title .tsw-highlight { color: var(--tsw-accent, #2ecc71); }
.cs-hero-desc {
    font-size: clamp(0.95rem, 1.5vw, 1.1rem);
    color: rgba(255, 255, 255, 0.72);
    line-height: 1.7;
    max-width: 560px;
    margin-bottom: 0;
}

/* Hero stats */
.cs-hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 36px;
    flex-wrap: wrap;
}
.cs-hero-stat strong {
    display: block;
    font-family: var(--tsw-font-display, 'Qilka', serif);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    color: var(--tsw-accent, #2ecc71);
    line-height: 1;
    margin-bottom: 4px;
}
.cs-hero-stat span {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.55);
    font-weight: 500;
}

/* ============ COMPACT FILTER BAR ============ */
.cs-filters {
    padding: 14px 0 10px;
    background: #fff;
    border-bottom: 1px solid var(--tsw-border, #e0e0e0);
    position: sticky;
    top: 68px;
    z-index: 90;
    box-shadow: 0 2px 12px rgba(0,0,0,.04);
}

.cs-filter-bar {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ── Filter Group (label + scroll row) ── */
.cs-filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.cs-filter-label {
    flex-shrink: 0;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--tsw-text-muted, #999);
    white-space: nowrap;
    min-width: 62px;
}
.cs-filter-label i {
    font-size: 0.72rem;
    color: var(--tsw-accent, #2ecc71);
    margin-right: 2px;
}

/* ── Horizontal scroll container ── */
.cs-filter-scroll {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 2px 20px 2px 0;
    mask-image: linear-gradient(to right, #000 0, #000 calc(100% - 20px), transparent 100%);
    -webkit-mask-image: linear-gradient(to right, #000 0, #000 calc(100% - 20px), transparent 100%);
}
.cs-filter-scroll::-webkit-scrollbar {
    display: none;
}

/* ── Compact filter chips ── */
.cs-filter-btn {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 13px;
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--tsw-text-muted, #666);
    background: var(--tsw-light, #f5f5f5);
    border: 1.5px solid transparent;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}
.cs-filter-btn:hover {
    border-color: rgba(46,204,113,.35);
    color: var(--tsw-primary, #1a3a2a);
    background: rgba(46,204,113,.06);
}
.cs-filter-btn.active {
    background: var(--tsw-primary, #1a3a2a);
    border-color: var(--tsw-primary, #1a3a2a);
    color: #fff;
}

/* Count badge inside "All" chip */
.cs-chip-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 17px;
    padding: 0 5px;
    font-size: 0.62rem;
    font-weight: 700;
    border-radius: 50px;
    background: rgba(255,255,255,.22);
    line-height: 1;
}
.cs-filter-btn:not(.active) .cs-chip-count {
    background: rgba(0,0,0,.07);
    color: var(--tsw-text-muted, #888);
}

/* ── Divider between groups ── */
.cs-filter-divider {
    height: 1px;
    background: var(--tsw-border, #e8e8e8);
    margin: 0 0 0 72px;
}

/* ── Results status ── */
.cs-filter-status {
    font-size: 0.72rem;
    color: var(--tsw-text-muted, #999);
    text-align: right;
    margin-top: 4px;
    padding-right: 2px;
}
.cs-filter-status strong {
    color: var(--tsw-primary, #1a3a2a);
    font-weight: 700;
}

/* ============ CARD GRID ============ */
.cs-grid {
    padding: 60px 0 90px;
    background: var(--tsw-light, #f5f5f5);
}

/* --- Card --- */
.cs-card {
    background: #fff;
    border-radius: 12px;
    border: 1.5px solid var(--tsw-border, #e0e0e0);
    overflow: hidden;
    transition: all 0.4s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.cs-card:hover {
    border-color: rgba(26, 58, 42, 0.3);
    box-shadow: 0 16px 48px rgba(0, 50, 20, 0.1);
    transform: translateY(-4px);
}

/* Card Visual */
.cs-card-visual {
    position: relative;
    height: 240px;
    overflow: hidden;
}
.cs-card-visual-bg {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.cs-card-visual-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}
.cs-card-visual-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.12;
    background:
        radial-gradient(circle at 20% 30%, rgba(46, 204, 113, 0.6) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(13, 148, 136, 0.5) 0%, transparent 50%);
}

/* Country badge */
.cs-card-country {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 5;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    font-size: 0.72rem;
    font-weight: 600;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    border-radius: 50px;
}
.cs-card-industry {
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 5;
    padding: 5px 12px;
    font-size: 0.72rem;
    font-weight: 600;
    color: #fff;
    background: rgba(26, 58, 42, 0.75);
    backdrop-filter: blur(8px);
    border-radius: 50px;
}

/* Card Body */
.cs-card-body {
    padding: 22px 22px 14px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.cs-card-brand {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--tsw-dark, #1a1a2e);
    margin-bottom: 3px;
    line-height: 1.25;
}
.cs-card-tagline {
    font-size: 0.78rem;
    color: var(--tsw-primary, #1a3a2a);
    font-weight: 600;
    margin-bottom: 12px;
}

/* Service chips */
.cs-card-services {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}
.cs-card-service {
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--tsw-text-muted, #666);
    background: var(--tsw-light, #f5f5f5);
    border: 1px solid var(--tsw-border, #e0e0e0);
    border-radius: 50px;
}

.cs-card-desc {
    font-size: 0.82rem;
    color: var(--tsw-text-muted, #666);
    line-height: 1.6;
    margin-bottom: 16px;
}

/* Metrics */
.cs-card-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 18px 0 0;
    border-top: 1px solid var(--tsw-border, #e0e0e0);
    margin-top: auto;
}
.cs-card-metric {
    text-align: center;
}
.cs-card-metric-value {
    font-family: var(--tsw-font-display, 'Qilka', serif);
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--tsw-primary, #1a3a2a);
    line-height: 1.1;
    margin-bottom: 2px;
}
.cs-card-metric-label {
    font-size: 0.64rem;
    color: var(--tsw-text-muted, #666);
    font-weight: 500;
    line-height: 1.3;
}

/* Card Footer */
.cs-card-footer {
    padding: 14px 22px 20px;
}
.cs-card-techs {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    align-items: center;
    margin-bottom: 14px;
}
.cs-card-tech {
    padding: 3px 7px;
    font-size: 0.64rem;
    font-weight: 600;
    color: var(--tsw-primary, #1a3a2a);
    background: rgba(26, 58, 42, 0.08);
    border: 1px solid rgba(26, 58, 42, 0.15);
    border-radius: 4px;
}

/* Card Actions */
.cs-card-actions {
    display: flex;
    gap: 8px;
}
.cs-card-btn-preview,
.cs-card-btn-inquire {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 12px;
    font-size: 0.78rem;
    font-weight: 700;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}
.cs-card-btn-preview {
    background: var(--tsw-primary, #1a3a2a);
    color: #fff;
    border: 1.5px solid var(--tsw-primary, #1a3a2a);
}
.cs-card-btn-preview:hover {
    background: var(--tsw-primary-dark, #0f2a1c);
    border-color: var(--tsw-primary-dark, #0f2a1c);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(26, 58, 42, 0.25);
}
.cs-card-btn-inquire {
    background: transparent;
    color: var(--tsw-dark, #1a1a2e);
    border: 1.5px solid var(--tsw-border, #e0e0e0);
}
.cs-card-btn-inquire:hover {
    border-color: var(--tsw-dark, #1a1a2e);
    background: var(--tsw-dark, #1a1a2e);
    color: #fff;
    transform: translateY(-1px);
}

/* ============ RESULTS BANNER ============ */
.cs-results {
    padding: 60px 0;
    background: var(--tsw-primary, #1a3a2a);
}
.cs-results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.cs-results-item strong {
    display: block;
    font-family: var(--tsw-font-display, 'Qilka', serif);
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    color: var(--tsw-accent, #2ecc71);
    line-height: 1;
    margin-bottom: 6px;
}
.cs-results-item span {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

/* ============ No Results ============ */
.cs-no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--tsw-text-muted, #666);
}
.cs-no-results i {
    font-size: 3rem;
    color: var(--tsw-border, #e0e0e0);
    display: block;
    margin-bottom: 16px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 991px) {
    .cs-hero { padding: 110px 0 60px; }
    .cs-results-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 767px) {
    .cs-filters { top: 60px; padding: 10px 0 8px; }
    .cs-filter-bar { gap: 6px; }
    .cs-filter-label { min-width: 50px; font-size: 0.65rem; }
    .cs-filter-btn { padding: 4px 11px; font-size: 0.7rem; }
    .cs-filter-divider { margin-left: 60px; }
    .cs-card-visual { height: 200px; }
    .cs-filter-status { font-size: 0.68rem; }
}
@media (max-width: 575px) {
    .cs-hero { padding: 100px 0 40px; }
    .cs-hero-stats { gap: 20px; }
    .cs-grid { padding: 40px 0 60px; }
    .cs-results-grid { grid-template-columns: 1fr 1fr; }
    .cs-card-actions { flex-direction: column; }
    .cs-filter-group { gap: 6px; }
    .cs-filter-label { min-width: auto; font-size: 0; }
    .cs-filter-label i { font-size: 0.8rem; }
    .cs-filter-divider { margin-left: 0; }
    .cs-filter-btn { padding: 4px 10px; font-size: 0.68rem; }
    .cs-chip-count { min-width: 18px; height: 15px; font-size: 0.58rem; }
}


/* ══════════════════════════════════════════════════════════
 *  BOTTOM CTA
 * ══════════════════════════════════════════════════════════ */
.cs-cta {
    padding: 90px 0;
    background: var(--tsw-forest, #1a3c2a);
    text-align: center;
}

.cs-cta-title {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    color: var(--tsw-white, #fff);
    margin-bottom: 14px;
}

.cs-cta-desc {
    font-size: 1rem;
    color: rgba(255,255,255,.72);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

/* CTA buttons now use global .tsw-btn-primary / .tsw-btn-outline + .tsw-dark-cta context */

@media (max-width: 991.98px) {
    .cs-cta { padding: 60px 0; }
}
@media (max-width: 575px) {
    .cs-cta { padding: 50px 0; }
}


/* ══════════════════════════════════════════════════════════
 *  CASE STUDY DETAIL POPUP (csd- prefix)
 *
 *  Landscape modal: thumbnail left, details right.
 *  Wider than tall for a "quick view" experience.
 * ══════════════════════════════════════════════════════════ */

/* Overlay */
.csd-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .35s ease, visibility .35s ease;
}
.csd-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Popup container */
.csd-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.92);
    z-index: 10001;
    width: 94%;
    max-width: 720px;
    max-height: 90vh;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 32px 100px rgba(0, 0, 0, 0.25);
    opacity: 0;
    visibility: hidden;
    transition: opacity .35s ease, visibility .35s ease, transform .35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}
.csd-popup.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

/* Close button */
.csd-close {
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 10;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(0,0,0,.08);
    cursor: pointer;
    font-size: 1rem;
    color: #333;
    transition: all .25s ease;
}
.csd-close:hover {
    background: var(--tsw-dark, #1a1a2e);
    color: #fff;
}

/* Inner: vertical stack layout */
.csd-inner {
    display: flex;
    flex-direction: column;
    max-height: 90vh;
}

/* Top: Image banner — full image, no cropping */
.csd-image {
    position: relative;
    width: 100%;
    flex-shrink: 0;
    background: linear-gradient(155deg, #111820, #1a3a25);
    overflow: hidden;
    max-height: 400px;
}
.csd-image img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
    object-position: center;
}
.csd-image-metrics {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 24px;
    background: linear-gradient(to top, rgba(0,0,0,.8) 0%, transparent 100%);
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}
.csd-image-metrics:empty { display: none; }
.csd-metric-item {
    text-align: center;
}
.csd-metric-value {
    display: block;
    font-family: var(--tsw-font-display, 'Qilka', serif);
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--tsw-accent, #2ecc71);
    line-height: 1.1;
}
.csd-metric-label {
    font-size: 0.68rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

/* Right: Details panel */
.csd-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.csd-details-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 32px 28px 20px;
}

/* Badges row */
.csd-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}
.csd-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 12px;
    font-size: 0.72rem;
    font-weight: 600;
    border-radius: 50px;
    background: rgba(26, 58, 42, 0.08);
    color: var(--tsw-primary, #1a3a2a);
}
.csd-badge i { font-size: 0.7rem; }
.csd-badge--accent {
    background: rgba(46, 204, 113, 0.12);
    color: var(--tsw-accent, #2ecc71);
}

/* Title */
.csd-title {
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    font-weight: 800;
    color: var(--tsw-dark, #1a1a2e);
    line-height: 1.2;
    margin-bottom: 6px;
}

/* Tagline */
.csd-tagline {
    font-size: 0.85rem;
    color: var(--tsw-primary, #1a3a2a);
    font-weight: 600;
    margin-bottom: 12px;
}

/* Excerpt */
.csd-excerpt {
    font-size: 0.88rem;
    color: var(--tsw-text-muted, #666);
    line-height: 1.65;
    margin-bottom: 20px;
}

/* Info grid */
.csd-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--tsw-light, #f5f5f5);
    border-radius: 10px;
}
.csd-info-grid:empty { display: none; }
.csd-info-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.csd-info-label {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--tsw-text-muted, #888);
}
.csd-info-value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--tsw-dark, #1a1a2e);
}

/* Story: Challenge / Solution / Outcome */
.csd-story { margin-bottom: 18px; }
.csd-story:empty { display: none; }
.csd-story-item {
    margin-bottom: 14px;
}
.csd-story-item:last-child { margin-bottom: 0; }
.csd-story-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 5px;
}
.csd-story-label--challenge { color: #e67e22; }
.csd-story-label--solution  { color: var(--tsw-accent, #2ecc71); }
.csd-story-label--outcome   { color: #3498db; }
.csd-story-text {
    font-size: 0.84rem;
    color: var(--tsw-text-muted, #555);
    line-height: 1.6;
}

/* Tech stack */
.csd-techs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.csd-techs:empty { display: none; }
.csd-tech-tag {
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--tsw-primary, #1a3a2a);
    background: rgba(26, 58, 42, 0.08);
    border: 1px solid rgba(26, 58, 42, 0.15);
    border-radius: 5px;
}

/* Footer actions */
.csd-actions {
    display: flex;
    gap: 10px;
    padding: 16px 28px;
    border-top: 1px solid var(--tsw-border, #e0e0e0);
    background: #fff;
}
.csd-btn-live,
.csd-btn-inquire {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 12px 18px;
    font-size: 0.82rem;
    font-weight: 700;
    border-radius: 8px;
    text-decoration: none;
    transition: all .3s ease;
    cursor: pointer;
    border: none;
}
.csd-btn-live {
    background: var(--tsw-primary, #1a3a2a);
    color: #fff;
    border: 1.5px solid var(--tsw-primary, #1a3a2a);
}
.csd-btn-live:hover {
    background: var(--tsw-primary-dark, #0f2a1c);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(26, 58, 42, 0.25);
}
.csd-btn-inquire {
    background: transparent;
    color: var(--tsw-dark, #1a1a2e);
    border: 1.5px solid var(--tsw-border, #e0e0e0);
    font-family: var(--tsw-font-body, 'Inter', sans-serif);
}
.csd-btn-inquire:hover {
    border-color: var(--tsw-dark, #1a1a2e);
    background: var(--tsw-dark, #1a1a2e);
    color: #fff;
    transform: translateY(-1px);
}

/* ── Responsive ── */
@media (max-width: 767px) {
    .csd-popup {
        width: 96%;
        max-width: none;
        max-height: 92vh;
        border-radius: 12px;
    }
    .csd-image {
        max-height: 260px;
    }
    .csd-details-scroll {
        padding: 20px 18px 14px;
    }
    .csd-info-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        padding: 12px;
    }
    .csd-actions {
        padding: 12px 18px;
    }
    .csd-title { font-size: 1.15rem; }
    .csd-close { top: 10px; right: 10px; width: 32px; height: 32px; }
}
@media (max-width: 480px) {
    .csd-popup { width: 98%; max-height: 94vh; }
    .csd-image { max-height: 200px; }
    .csd-info-grid { grid-template-columns: 1fr; }
    .csd-actions { flex-direction: column; gap: 8px; }
    .csd-badges { gap: 5px; }
    .csd-badge { font-size: 0.68rem; padding: 3px 9px; }
}