/* ============================================
   CASE STUDY / PORTFOLIO SINGLE STYLES
   Page: single-portfolio.php
   ============================================ */

:root {
    --accent: #6366f1;
    --accent-rgb: 99,102,241;
    --bg-primary: #0a0b0f;
    --bg-secondary: #12141c;
    --bg-card: #1a1d28;
    --bg-elevated: #1a1d28;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-subtle: rgba(255,255,255,0.08);
    --border-accent: rgba(99,102,241,0.3);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

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

.cs { background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; }

/* HERO SECTION - Full Width Title Only */
.cs-hero { position: relative; padding: 100px 5vw 40px; background: var(--bg-primary); overflow: hidden; }
.cs-hero::before { content: ""; position: absolute; top: -50%; right: -20%; width: 80%; height: 150%; background: radial-gradient(ellipse, rgba(var(--accent-rgb), 0.08) 0%, transparent 60%); pointer-events: none; }
.cs-hero__inner { max-width: 1200px; margin: 0 auto; position: relative; z-index: 2; }
.cs-hero__content { animation: slideUp 0.8s var(--ease-out-expo) forwards; max-width: 900px; }
@keyframes slideUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
.cs-hero__breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.cs-hero__breadcrumb a { color: var(--text-muted); text-decoration: none; transition: color 0.3s; }
.cs-hero__breadcrumb a:hover { color: var(--accent); }
.cs-hero__badges { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.cs-badge { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; background: var(--bg-elevated); border: 1px solid var(--border-subtle); border-radius: 6px; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); }
.cs-badge--status { background: rgba(16, 185, 129, 0.1); border-color: rgba(16, 185, 129, 0.3); color: var(--success); }
.cs-badge--status::before { content: ""; width: 6px; height: 6px; background: currentColor; border-radius: 50%; }
.cs-badge--accent { background: rgba(var(--accent-rgb), 0.1); border-color: rgba(var(--accent-rgb), 0.3); color: var(--accent); }
.cs-hero__title { font-size: clamp(2rem, 4vw, 3.5rem); font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 20px; }
.cs-hero__summary { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.7; max-width: 700px; }

/* TWO-ROW SNAPSHOT BAR */
.cs-snapshot-bar { padding: 0 5vw 60px; background: var(--bg-primary); }
.cs-snapshot-bar__inner { max-width: 1200px; margin: 0 auto; }
.cs-snapshot { background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: 16px; padding: 28px 32px; animation: slideUp 0.8s var(--ease-out-expo) 0.1s both; display: flex; flex-direction: column; gap: 20px; }

/* Row 1: Client + Meta + Visit Button */
.cs-snapshot__row { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.cs-snapshot__client { display: flex; align-items: center; gap: 16px; padding-right: 32px; border-right: 1px solid var(--border-subtle); }
.cs-snapshot__logo { width: 48px; height: 48px; border-radius: 10px; object-fit: contain; background: #fff; padding: 6px; }
.cs-snapshot__logo-placeholder { width: 48px; height: 48px; border-radius: 10px; background: rgba(var(--accent-rgb), 0.1); display: flex; align-items: center; justify-content: center; color: var(--accent); }
.cs-snapshot__client-name { font-size: 1rem; font-weight: 600; color: var(--text-primary); }
.cs-snapshot__meta { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; flex: 1; }
.cs-snapshot__item { display: flex; flex-direction: column; gap: 2px; }
.cs-snapshot__label { font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); }
.cs-snapshot__value { font-size: 14px; font-weight: 500; color: var(--text-primary); }
.cs-snapshot__visit-btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; background: transparent; border: 1px solid var(--accent); border-radius: 8px; color: var(--accent); font-size: 13px; font-weight: 600; text-decoration: none; transition: all 0.3s var(--ease-out-expo); margin-left: auto; }
.cs-snapshot__visit-btn:hover { background: var(--accent); color: #000; }

/* Row 2: Results */
.cs-snapshot__results-row { display: flex; align-items: center; gap: 20px; padding-top: 20px; border-top: 1px solid var(--border-subtle); }
.cs-snapshot__results-title { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.15em; color: var(--accent); padding-right: 20px; border-right: 1px solid var(--border-subtle); }
.cs-snapshot__results-list { display: flex; gap: 16px; flex-wrap: wrap; flex: 1; }
.cs-snapshot__result { display: flex; align-items: center; gap: 10px; padding: 10px 16px; background: rgba(var(--accent-rgb), 0.05); border-radius: 8px; border-left: 3px solid var(--accent); }
.cs-snapshot__result-value { font-size: 1.1rem; font-weight: 700; color: var(--accent); white-space: nowrap; }
.cs-snapshot__result-label { font-size: 12px; color: var(--text-secondary); max-width: 120px; }

/* CTA BUTTONS */
.cs-cta-row { padding: 40px 5vw; background: var(--bg-secondary); }
.cs-cta-row__inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.cs-cta-row__text { font-size: 1.15rem; color: var(--text-secondary); }
.cs-cta-row__text strong { color: var(--text-primary); }
.cs-btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 28px; border-radius: 10px; font-size: 14px; font-weight: 600; text-decoration: none; cursor: pointer; transition: all 0.4s var(--ease-out-expo); border: none; white-space: nowrap; }
.cs-btn--primary { background: var(--accent); color: #000; }
.cs-btn--primary:hover { transform: translateY(-3px); box-shadow: 0 20px 40px -10px rgba(var(--accent-rgb), 0.5); }
.cs-btn--secondary { background: transparent; color: var(--text-primary); border: 1px solid var(--border-subtle); }
.cs-btn--secondary:hover { background: var(--bg-elevated); border-color: var(--accent); }

/* SECTION STYLES */
.cs-section { padding: 80px 5vw; }
.cs-section--alt { background: var(--bg-secondary); }
.cs-section__inner { max-width: 1000px; margin: 0 auto; }
.cs-section__header { text-align: center; margin-bottom: 48px; }
.cs-section__eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.15em; color: var(--accent); margin-bottom: 12px; }
.cs-section__title { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 700; letter-spacing: -0.02em; }

/* COMBINED STORY SECTION */
.cs-story { padding: 80px 5vw; background: var(--bg-secondary); }
.cs-story__inner { max-width: 1200px; margin: 0 auto; }
.cs-story__header { text-align: center; margin-bottom: 48px; }
.cs-story__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cs-story__card { background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: 16px; padding: 28px; transition: all 0.3s var(--ease-out-expo); }
.cs-story__card:hover { border-color: rgba(var(--accent-rgb), 0.3); transform: translateY(-4px); }
.cs-story__card-icon { width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.cs-story__card--challenge .cs-story__card-icon { background: rgba(239, 68, 68, 0.1); color: var(--danger); }
.cs-story__card--solution .cs-story__card-icon { background: rgba(var(--accent-rgb), 0.1); color: var(--accent); }
.cs-story__card--results .cs-story__card-icon { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.cs-story__card-eyebrow { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.15em; margin-bottom: 8px; }
.cs-story__card--challenge .cs-story__card-eyebrow { color: var(--danger); }
.cs-story__card--solution .cs-story__card-eyebrow { color: var(--accent); }
.cs-story__card--results .cs-story__card-eyebrow { color: var(--success); }
.cs-story__card-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
.cs-story__card-content { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.cs-story__card-content p { margin-bottom: 12px; }
.cs-story__card-content p:last-child { margin-bottom: 0; }
.cs-story__tech-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.cs-story__tech-tag { padding: 4px 10px; background: rgba(var(--accent-rgb), 0.1); border-radius: 4px; font-size: 11px; font-weight: 600; color: var(--accent); }

/* RESULTS TABLE */
.cs-results-section { padding: 60px 5vw; }
.cs-results-section__inner { max-width: 1000px; margin: 0 auto; }
.cs-results-table { width: 100%; border-collapse: collapse; background: var(--bg-card); border-radius: 16px; overflow: hidden; border: 1px solid var(--border-subtle); }
.cs-results-table thead { background: var(--bg-elevated); }
.cs-results-table th { padding: 16px 20px; text-align: left; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); border-bottom: 1px solid var(--border-subtle); }
.cs-results-table th:nth-child(2) { color: var(--danger); }
.cs-results-table th:nth-child(3) { color: var(--success); }
.cs-results-table th:nth-child(4) { color: var(--accent); }
.cs-results-table td { padding: 20px; border-bottom: 1px solid var(--border-subtle); vertical-align: middle; }
.cs-results-table tr:last-child td { border-bottom: none; }
.cs-results-table__metric { display: flex; align-items: center; gap: 12px; }
.cs-results-table__metric-icon { width: 36px; height: 36px; background: rgba(var(--accent-rgb), 0.1); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--accent); }
.cs-results-table__metric-label { font-weight: 600; color: var(--text-primary); }
.cs-results-table__before { font-size: 1.1rem; font-weight: 600; color: var(--danger); }
.cs-results-table__after { font-size: 1.1rem; font-weight: 600; color: var(--success); }
.cs-results-table__improvement { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; background: rgba(16, 185, 129, 0.1); border-radius: 100px; font-size: 14px; font-weight: 700; color: var(--success); }

/* TESTIMONIAL */
.cs-testimonial { padding: 80px 5vw; background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.05) 0%, transparent 50%); }
.cs-testimonial__inner { max-width: 800px; margin: 0 auto; text-align: center; }
.cs-testimonial__icon { width: 64px; height: 64px; background: rgba(var(--accent-rgb), 0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 32px; color: var(--accent); }
.cs-testimonial__quote { font-size: clamp(1.25rem, 2.5vw, 1.75rem); font-weight: 500; line-height: 1.6; color: var(--text-primary); margin-bottom: 32px; font-style: italic; }
.cs-testimonial__author { display: flex; align-items: center; justify-content: center; gap: 16px; }
.cs-testimonial__avatar { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; border: 2px solid var(--accent); }
.cs-testimonial__name { font-size: 1rem; font-weight: 600; color: var(--text-primary); }
.cs-testimonial__role { font-size: 14px; color: var(--text-muted); }
.cs-testimonial__video { margin-top: 40px; border-radius: 16px; overflow: hidden; aspect-ratio: 16/9; }
.cs-testimonial__video iframe { width: 100%; height: 100%; }

/* GALLERY */
.cs-gallery__main { position: relative; margin-bottom: 16px; border-radius: 16px; overflow: hidden; background: var(--bg-card); cursor: zoom-in; }
.cs-gallery__main-img { width: 100%; height: auto; display: block; }
.cs-gallery__nav { position: absolute; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; background: rgba(0,0,0,0.6); border: none; border-radius: 50%; color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.3s; }
.cs-gallery__nav:hover { background: var(--accent); }
.cs-gallery__nav--prev { left: 16px; }
.cs-gallery__nav--next { right: 16px; }
.cs-gallery__counter { position: absolute; bottom: 16px; right: 16px; padding: 8px 16px; background: rgba(0,0,0,0.6); border-radius: 100px; font-size: 13px; color: #fff; }
.cs-gallery__thumbs { display: flex; gap: 12px; overflow-x: auto; padding-bottom: 8px; }
.cs-gallery__thumb { width: 80px; height: 60px; border-radius: 8px; overflow: hidden; cursor: pointer; opacity: 0.5; transition: all 0.3s; flex-shrink: 0; }
.cs-gallery__thumb.active, .cs-gallery__thumb:hover { opacity: 1; }
.cs-gallery__thumb img { width: 100%; height: 100%; object-fit: cover; }

/* RELATED */
.cs-related__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cs-related__card { background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: 16px; overflow: hidden; text-decoration: none; transition: all 0.4s var(--ease-out-expo); }
.cs-related__card:hover { transform: translateY(-8px); border-color: var(--accent); }
.cs-related__card-image { aspect-ratio: 16/10; overflow: hidden; }
.cs-related__card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.cs-related__card:hover .cs-related__card-image img { transform: scale(1.05); }
.cs-related__card-content { padding: 20px; }
.cs-related__card-title { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.cs-related__card-excerpt { font-size: 14px; color: var(--text-muted); }

/* FOOTER CTA */
.cs-footer-cta { padding: 100px 5vw; background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%); text-align: center; }
.cs-footer-cta__inner { max-width: 700px; margin: 0 auto; }
.cs-footer-cta__title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; margin-bottom: 16px; }
.cs-footer-cta__title span { background: linear-gradient(135deg, var(--accent), #a855f7); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.cs-footer-cta__text { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 32px; }
.cs-footer-cta__buttons { display: flex; justify-content: center; gap: 16px; }

/* LIGHTBOX */
.cs-lightbox { position: fixed; inset: 0; background: rgba(0,0,0,0.95); z-index: 9999; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all 0.3s; }
.cs-lightbox.active { opacity: 1; visibility: visible; }
.cs-lightbox__close { position: absolute; top: 20px; right: 20px; width: 48px; height: 48px; background: rgba(255,255,255,0.1); border: none; border-radius: 50%; color: #fff; font-size: 24px; cursor: pointer; }
.cs-lightbox img { max-width: 90vw; max-height: 90vh; object-fit: contain; }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .cs-snapshot__row { flex-direction: column; align-items: flex-start; gap: 16px; }
    .cs-snapshot__client { border-right: none; padding-right: 0; padding-bottom: 16px; border-bottom: 1px solid var(--border-subtle); width: 100%; }
    .cs-snapshot__visit-btn { margin-left: 0; width: 100%; justify-content: center; }
    .cs-snapshot__results-row { flex-direction: column; align-items: flex-start; gap: 12px; }
    .cs-snapshot__results-title { border-right: none; padding-right: 0; }
    .cs-story__grid { grid-template-columns: 1fr; }
    .cs-related__grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .cs-hero { padding: 80px 5vw 30px; }
    .cs-snapshot-bar { padding-bottom: 40px; }
    .cs-snapshot { padding: 20px; }
    .cs-section { padding: 60px 5vw; }
    .cs-snapshot__meta { gap: 16px; }
    .cs-cta-row__inner { flex-direction: column; text-align: center; }
    .cs-results-table { display: block; overflow-x: auto; }
    .cs-footer-cta__buttons { flex-direction: column; }
}