/* =========================================================
   Ahmed Balubaid — Portfolio
   Warm, premium, editorial theme
   ========================================================= */

:root {
  --bg: #F4F0E6;
  --card-bg: #FBF9F3;
  --text-primary: #292821;
  --text-secondary: #6F6A60;
  --green: #1F7A63;
  --green-dark: #155B4B;
  --beige: #EAE2D3;
  --border: #DED6C8;

  --font-sans: 'Public Sans', system-ui, -apple-system, sans-serif;
  --font-serif: 'Lora', Georgia, serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3 { margin: 0; }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--green);
}

.section-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}

.meta-dot { color: var(--border); }
.meta-accent { color: var(--green-dark); font-weight: 600; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: background-color .15s ease, border-color .15s ease, transform .15s ease;
}

.btn-primary {
  background: var(--green);
  color: #FBF9F3;
}
.btn-primary:hover { background: var(--green-dark); transform: translateY(-1px); }

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--green); color: var(--green-dark); }

.btn-nav {
  padding: 9px 18px;
  font-size: 14px;
}

/* ---------- nav ---------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(244, 240, 230, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  color: var(--text-primary);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 28px;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }

.nav-links a {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: color .15s ease;
}
.nav-links a:hover { color: var(--green-dark); }

/* ---------- hero ---------- */

.hero {
  padding: 96px 32px 88px;
}

.hero-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.hero-subrole {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: -6px;
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(36px, 5.4vw, 54px);
  line-height: 1.12;
  color: var(--text-primary);
  margin-top: 8px;
}

.hero-text {
  margin: 0;
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 520px;
}

.hero-meta {
  font-size: 14.5px;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 10px;
}

.hero-social {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 26px;
  margin-top: 18px;
}
.hero-social a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color .15s ease;
}
.hero-social a:hover { color: var(--green-dark); }

/* ---------- projects ---------- */

.projects { padding: 20px 32px 100px; }

.section-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(28px, 4vw, 38px);
  margin-top: 10px;
  margin-bottom: 40px;
}

.project-tag {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--green);
}

.project-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 26px;
  color: var(--text-primary);
  margin-top: 8px;
}

.project-subtitle {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 4px;
}

.project-desc {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin: 14px 0 0;
}

.project-featured {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 44px;
  margin-bottom: 32px;
}

.project-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}

.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 600;
  color: var(--green-dark);
}
.stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.3;
}

.project-featured-media {
  height: 100%;
  min-height: 280px;
  display: flex;
  background: var(--beige);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
}

.project-featured-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 4px;
}

.card-media {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--beige);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 20px;
}

.card-media-portrait { height: 300px; }

.card-media img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
}

.mini-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.mini-stat { display: flex; flex-direction: column; gap: 1px; }
.mini-stat-num {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--green-dark);
}
.mini-stat-label {
  font-size: 11.5px;
  color: var(--text-secondary);
  line-height: 1.3;
}

.project-note {
  margin-top: 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  font-style: italic;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.tag-row span {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--beige);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 5px 11px;
}

.project-featured .btn { margin-top: 26px; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px;
}

/* ---------- about / skills / experience ---------- */

.about {
  padding: 90px 32px 100px;
  background: var(--beige);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 48px;
}

.col-heading {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  font-size: 24px;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.about-text {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0;
}

.about-location {
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-dark);
}

.skill-group { margin-bottom: 20px; }
.skill-group:last-child { margin-bottom: 0; }

.skill-group-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.skill-group .tag-row { margin-top: 0; }
.skill-group .tag-row span { background: var(--card-bg); }

.exp-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.exp-item:first-of-type { padding-top: 0; }
.exp-item:last-child { border-bottom: none; padding-bottom: 0; }

.exp-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.exp-title {
  font-weight: 700;
  font-size: 15.5px;
  color: var(--text-primary);
}

.exp-badge {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .3px;
  text-transform: uppercase;
  color: var(--green-dark);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
}

.exp-company {
  font-size: 14.5px;
  color: var(--text-secondary);
  margin-top: 3px;
}

.exp-dates {
  font-size: 13px;
  color: var(--text-secondary);
  opacity: .85;
  margin-top: 2px;
}

/* ---------- footer ---------- */

.site-footer { padding: 48px 32px; }

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  color: var(--text-primary);
}

.footer-role {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-links a {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color .15s ease;
}
.footer-links a:hover { color: var(--green-dark); }

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 960px) {
  .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .project-featured { grid-template-columns: 1fr; padding: 32px; }
  .project-featured-media { order: -1; min-height: 220px; }
  .project-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .project-grid { grid-template-columns: 1fr; }
  .nav-inner { padding: 14px 20px; gap: 10px 16px; flex-wrap: wrap; justify-content: center; }
  .nav-logo { flex: 1 0 auto; }
  .nav-links { order: 3; flex: 1 0 100%; justify-content: center; flex-wrap: wrap; overflow-x: visible; gap: 8px 20px; }
  .hero { padding: 72px 20px 64px; }
  .projects, .about { padding-left: 20px; padding-right: 20px; }
  .section-inner { padding: 0 20px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; width: 100%; }
  .btn { justify-content: center; }
  .project-featured { padding: 24px; }
  .project-card { padding: 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* =========================================================
   HOMEPAGE PROJECT CARDS — clickable case-study links
   ========================================================= */

a.project-featured,
a.project-card {
  display: grid;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

a.project-card { display: block; }

.project-featured:hover,
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--green);
  box-shadow: 0 10px 28px rgba(41, 40, 33, 0.08);
}

.case-study-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 22px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--green-dark);
}
.project-featured .case-study-link,
.project-card .case-study-link {
  transition: gap .15s ease;
}
.project-featured:hover .case-study-link,
.project-card:hover .case-study-link {
  gap: 10px;
}

/* =========================================================
   CASE STUDY PAGES
   ========================================================= */

.case-topbar {
  padding-top: 28px;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color .15s ease;
}
.breadcrumb:hover { color: var(--green-dark); }

.case-hero {
  padding: 36px 32px 8px;
}

.case-hero-inner {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.case-category {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--green);
}

.case-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(30px, 4.6vw, 44px);
  line-height: 1.15;
  color: var(--text-primary);
}

.case-subtitle {
  font-size: 17px;
  font-weight: 600;
  color: var(--green-dark);
  margin-top: -6px;
}

.case-desc {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 6px 0 0;
}

.case-badges { justify-content: center; }

.case-hero-image {
  padding: 40px 32px 0;
}

.case-screenshot-frame {
  max-width: 1000px;
  margin: 0 auto;
  background: var(--beige);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.case-screenshot-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 5px;
}

[data-lightbox] { cursor: zoom-in; }

.section-divider {
  padding: 0 32px;
}
.section-divider hr {
  max-width: 1180px;
  margin: 0 auto;
  border: none;
  border-top: 1px solid var(--border);
}

.case-section {
  padding: 64px 32px;
}

.case-section.narrow .case-section-content {
  max-width: 740px;
  margin: 0 auto;
}

.case-section-content {
  max-width: 1180px;
  margin: 0 auto;
}

.case-heading {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(24px, 3vw, 30px);
  color: var(--text-primary);
  margin-bottom: 18px;
  text-align: center;
}
.case-section.narrow .case-heading,
.case-section.narrow .case-body { text-align: left; }

.case-body {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 16px;
}
.case-body:last-child { margin-bottom: 0; }

.case-question {
  margin: 24px 0 0;
  padding: 20px 26px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 6px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 18px;
  color: var(--text-primary);
}

/* metric row (glance / key results) */

.metric-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 24px;
  text-align: center;
}

.metric-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 22px 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.metric-num {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 26px;
  color: var(--green-dark);
}

.metric-label {
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.35;
}

/* data entities */

.data-entities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 8px;
}

.data-entity {
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.data-entity h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 6px;
}

.data-entity p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

/* workflow diagram */

.workflow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin-top: 32px;
}

.workflow-step {
  width: 100%;
  max-width: 420px;
  text-align: center;
  padding: 14px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.workflow-arrow {
  font-size: 16px;
  color: var(--green);
  line-height: 1;
  padding: 6px 0;
}

/* dashboard / screenshot sections */

.screenshot-block {
  margin-top: 40px;
}
.screenshot-block:first-child { margin-top: 8px; }

.screenshot-block-head {
  max-width: 740px;
  margin: 0 auto 18px;
  text-align: center;
}

.screenshot-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.screenshot-desc {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin: 0;
}

/* disclaimer */

.disclaimer-box {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 26px;
  background: var(--beige);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-align: center;
}

.disclaimer-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--green-dark);
  margin-bottom: 8px;
}

.disclaimer-text {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

/* feature grid (trip registration) */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 8px;
}

.feature-block {
  padding: 22px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.feature-block h3 {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 8px;
}

.feature-block p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin: 0;
}

/* project links / CTAs */

.case-cta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* source-not-available block */

.source-block {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 26px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.source-block .source-label {
  font-family: var(--font-serif);
  font-weight: 600;
  font-style: italic;
  font-size: 18px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.source-block p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

/* explore another project */

.explore-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 8px;
}

.explore-card {
  display: block;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.explore-card:hover {
  transform: translateY(-3px);
  border-color: var(--green);
  box-shadow: 0 10px 28px rgba(41, 40, 33, 0.08);
}

.explore-eyebrow {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 6px;
}

.explore-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  color: var(--text-primary);
}

.case-prevnext {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.prevnext-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.prevnext-link.next { text-align: right; margin-left: auto; }

.prevnext-label {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.prevnext-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--green-dark);
}

.case-back-footer {
  text-align: center;
  padding: 8px 32px 56px;
}

/* lightbox */

.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(41, 40, 33, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease;
  z-index: 100;
}
.lightbox-overlay.active { opacity: 1; pointer-events: auto; }
.lightbox-overlay img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 6px;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
  cursor: zoom-out;
}

/* ---------- case study responsive ---------- */

@media (max-width: 960px) {
  .metric-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .explore-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .case-hero { padding: 28px 20px 4px; }
  .case-hero-image { padding: 28px 20px 0; }
  .case-section { padding: 48px 20px; }
  .section-divider { padding: 0 20px; }
  .case-topbar { padding: 24px 20px 0; }
  .case-back-footer { padding: 8px 20px 48px; }
}

@media (max-width: 480px) {
  .metric-row { grid-template-columns: 1fr 1fr; }
  .case-cta-row { flex-direction: column; align-items: stretch; }
  .case-cta-row .btn { justify-content: center; }
  .case-prevnext { flex-direction: column; }
  .prevnext-link.next { text-align: left; margin-left: 0; }
}