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

:root {
  --bg: #f5f3f0;
  --fg: #1a1a1a;
  --muted: #7a7672;
  --accent: #c44d2b;
  --nightsky: #4568be;
  --border: #d6d2cd;
  --card-bg: #ffffff;
  --serif: 'Instrument Serif', Georgia, serif;
  --mono: 'IBM Plex Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #fff; }

/* ============================================================
   NAV
   ============================================================ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

nav .logo {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--fg);
}

nav .nav-links {
  display: flex;
  gap: 32px;
}

nav .nav-links a {
  color: var(--fg);
  text-decoration: none;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color 0.3s;
}

nav .nav-links a:hover { color: var(--accent); }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  padding: 40px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.8s ease forwards;
}

.fade-in-delay-1, .fade-in-d1 { animation-delay: 0.1s; }
.fade-in-delay-2, .fade-in-d2 { animation-delay: 0.2s; }
.fade-in-delay-3, .fade-in-d3 { animation-delay: 0.3s; }
.fade-in-delay-4            { animation-delay: 0.4s; }

@keyframes fadeIn {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   SHARED — IMAGE PLACEHOLDER
   ============================================================ */
.img-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--card-bg);
}

.img-wrap img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.img-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ============================================================
   SECTIONS (portfolio)
   ============================================================ */
section {
  padding: 80px 40px;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}

/* ============================================================
   HERO (portfolio)
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 40px 80px;
  max-width: 900px;
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(64px, 7vw, 80px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
}

.hero h1 em { font-style: italic; color: var(--accent); }

.hero p {
  font-size: 18px;
  color: var(--fg);
  max-width: 520px;
  margin-bottom: 48px;
}

.hero .stats { display: flex; gap: 48px; }

.hero .stats .stat { display: flex; flex-direction: column; }

.hero .stats .stat-number {
  font-family: var(--serif);
  font-size: 48px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}

.hero .stats .stat-label {
  font-size: 14px;
  color: var(--fg);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============================================================
   CASE CARDS (portfolio)
   ============================================================ */
.cases {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.case-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s, transform 0.3s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.case-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.case-image {
  width: 100%;
  height: 400px;
  flex-shrink: 0;
  overflow: hidden;
}

.case-card:hover .case-image .img-wrap img {
  transform: scale(1.03);
}

.case-image .img-wrap img {
  transition: transform 0.4s ease;
}

.case-body {
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  flex: 1;
}

.case-meta {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.case-company {
  font-family: var(--serif);
  font-size: 24px;
  letter-spacing: -0.02em;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.case-tag-nda {
  display: inline-block;
  position: relative;
  top: -12px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0px 6px;
  border-radius: 4px;
}

.case-tag-soon {
  display: inline-block;
  position: relative;
  top: -12px;
  background: var(--nightsky);
  color: #fff;
  font-size: 11px;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0px 6px;
  border-radius: 4px;
}

.case-tag {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
}

.case-period {
  font-size: 12px;
  color: var(--muted);
  margin-top: auto;
}

.case-content h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  margin-bottom: 12px;
  color: var(--accent);
}

.case-content p {
  color: var(--muted);
  margin-bottom: 16px;
  font-size: 16px;
}

.case-content ul {
  list-style: none;
  padding: 0;
}

.case-content ul li {
  padding: 6px 0;
  font-size: 13px;
  color: var(--fg);
}

.case-content ul li span {
  color: var(--accent);
  margin-right: 8px;
}

/* ============================================================
   SKILLS (portfolio)
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.skill-item {
  padding: 24px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  transition: border-color 0.3s;
}

.skill-item:hover { border-color: var(--accent); }

.skill-item h4 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  margin-bottom: 8px;
}

.skill-item p { font-size: 12px; color: var(--muted); }

/* ============================================================
   CONTACT (portfolio)
   ============================================================ */
.contact-section {
  padding: 120px 40px;
  max-width: 700px;
}

.contact-section .section-title { margin-bottom: 24px; }

.contact-section p { color: var(--muted); margin-bottom: 32px; }

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-links a {
  color: var(--fg);
  text-decoration: none;
  font-size: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.3s, padding-left 0.3s;
}

.contact-links a:hover {
  color: var(--accent);
  padding-left: 8px;
}

.contact-links a .arrow {
  font-size: 18px;
  transition: transform 0.3s;
}

.contact-links a:hover .arrow { transform: translateX(4px); }

/* ============================================================
   CASE PAGE — BACK BAR
   ============================================================ */
.back-bar { padding: 80px 40px 0; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.3s, gap 0.3s;
}

.back-link:hover { color: var(--accent); gap: 12px; }

.back-link .arrow { font-size: 16px; }

/* ============================================================
   CASE PAGE — HEADER
   ============================================================ */
.case-header {
  padding: 40px 40px 48px;
  max-width: 1100px;
  margin: 0 auto;
}

.case-header-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 12px;
}

.case-header h1 {
  font-family: var(--serif);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.case-header h1 em { font-style: italic; color: var(--accent); }

.case-header-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* ============================================================
   CASE PAGE — HERO IMAGE
   ============================================================ */
.case-hero-image {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
  height: 480px;
  overflow: hidden;
  border-radius: 16px;
}

.case-hero-image .img-wrap {
  border-radius: 16px;
  overflow: hidden;
}

/* ============================================================
   CASE PAGE — CONTENT
   ============================================================ */
.case-content-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 64px 40px 80px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
}

.case-meta-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.case-meta-block h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 8px;
}

.case-meta-block p { font-size: 13px; line-height: 1.6; }

.case-meta-block ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.case-meta-block ul li {
  font-size: 13px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  color: var(--fg);
}

.case-meta-block ul li:first-child { border-top: 1px solid var(--border); }

.case-meta-block ul li span { color: var(--accent); margin-right: 8px; }

.case-text-col {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.case-text-col .placeholder-hint {
  font-size: 13px;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 24px;
  line-height: 1.8;
}

.case-text-col p { font-size: 16px; line-height: 1.9; color: var(--fg); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  nav { padding: 16px 20px; }
  nav .nav-links { gap: 20px; }
  nav .nav-links a { font-size: 11px; }

  .hero { padding: 100px 20px 60px; }
  .hero .stats { gap: 32px; flex-wrap: wrap; }

  section { padding: 60px 20px; }

  .case-image { height: 200px; }
  .case-body { grid-template-columns: 1fr; gap: 24px; padding: 24px; }

  .contact-section { padding: 80px 20px; }

  footer { padding: 24px 20px; flex-direction: column; gap: 8px; }

  /* case page */
  .back-bar { padding: 72px 20px 0; }
  .case-header { padding: 32px 20px 40px; }
  .case-hero-image { padding: 0 20px; height: 240px; }
  .case-content-section {
    padding: 40px 20px 60px;
    grid-template-columns: 1fr;
    gap: 32px;
  }
}