/* ============================================
   SHARED DESIGN TOKENS
   ============================================ */
:root {
  --bg-primary:    #0c0e13;
  --bg-secondary:  #111318;
  --bg-card:       #161920;
  --bg-card-hover: #1c202a;
  --border:        #1e2230;
  --border-glow:   rgba(0, 210, 220, 0.22);

  --text-primary:  #eaedf5;
  --text-muted:    #636880;
  --text-dim:      #363a4d;

  --accent:        #00cdd8;
  --accent-dim:    rgba(0, 205, 216, 0.1);
  --accent-glow:   0 0 24px rgba(0, 205, 216, 0.3);

  --purple:        #9d7cf4;
  --purple-dim:    rgba(157, 124, 244, 0.1);

  --green:         #2dd4a0;
  --green-dim:     rgba(45, 212, 160, 0.1);

  --yellow:        #f5b731;
  --yellow-dim:    rgba(245, 183, 49, 0.1);

  --font-display:  'Outfit', sans-serif;
  --font-body:     'Plus Jakarta Sans', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;

  --radius:        8px;
  --radius-lg:     12px;
  --nav-h:         64px;
  --transition:    0.18s ease;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 99px; }

/* ============================================
   UTILITIES
   ============================================ */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 28px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 3px 10px;
  border-radius: 99px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--bg-card);
  letter-spacing: 0.04em;
}
.tag.a { border-color: rgba(0,205,216,0.28); color: var(--accent); background: var(--accent-dim); }
.tag.p { border-color: rgba(157,124,244,0.28); color: var(--purple); background: var(--purple-dim); }
.tag.g { border-color: rgba(45,212,160,0.28); color: var(--green); background: var(--green-dim); }
.tag.y { border-color: rgba(245,183,49,0.28); color: var(--yellow); background: var(--yellow-dim); }

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* ============================================
   NAVIGATION
   ============================================ */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: rgba(12, 14, 19, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav-links a {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a.active { color: var(--accent); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1.5px;
  background: var(--accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 20px; height: 2px;
  background: var(--text-muted);
  border-radius: 99px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--accent); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--accent); }

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: rgba(12,14,19,0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 16px 28px 24px;
  z-index: 999;
  flex-direction: column;
  gap: 2px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--accent); }

/* ============================================
   PAGE HEADER
   ============================================ */
.page-header {
  padding-top: calc(var(--nav-h) + 72px);
  padding-bottom: 72px;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 80% 100% at 20% 50%, black 10%, transparent 80%);
  opacity: 0.4;
}
.page-header-inner {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-bottom: 28px;
  letter-spacing: 0.06em;
}
.breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--text-dim); }
.breadcrumb .current { color: var(--accent); }

.page-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 14px;
}
.page-title span { color: var(--accent); }

.page-subtitle {
  font-size: 0.97rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.8;
}

.page-stats {
  display: flex;
  gap: 28px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.page-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-stat-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}
.page-stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.page-stat-divider {
  width: 1px;
  background: var(--border);
  align-self: stretch;
}

/* ============================================
   SECTION STYLES
   ============================================ */
.projects-section { padding: 72px 0; }

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 20px;
  flex-wrap: wrap;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.section-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  white-space: nowrap;
}

/* ============================================
   PROJECT CARDS
   ============================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 20px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.project-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.project-card.wip { border-color: rgba(245,183,49,0.15); }
.project-card.wip:hover { border-color: rgba(245,183,49,0.3); }

.project-card-top {
  padding: 22px 22px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
}
.project-emoji { font-size: 2rem; line-height: 1; }
.project-links { display: flex; gap: 8px; }
.project-link-btn {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  color: var(--text-muted);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 99px;
  transition: all var(--transition);
}
.project-link-btn:hover { color: var(--accent); border-color: var(--accent); }

.project-body { padding: 0 22px 22px; flex: 1; }
.project-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.project-desc {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.project-tags { display: flex; flex-wrap: wrap; gap: 5px; }

/* Progress bar */
.project-progress {
  margin: 14px 22px 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--border);
}
.progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--text-dim);
  margin-bottom: 7px;
  letter-spacing: 0.04em;
}
.progress-track {
  height: 3px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--yellow);
  border-radius: 99px;
  transition: width 1s ease;
}

/* Card footer */
.card-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.69rem;
  color: var(--text-dim);
  transition: background var(--transition);
}
.project-card:hover .card-footer {
  background: rgba(0,205,216,0.04);
  color: var(--accent);
}

/* ============================================
   PLACEHOLDER CARD
   ============================================ */
.placeholder-card {
  background: transparent;
  border: 1px dashed var(--text-dim);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 24px;
  gap: 10px;
  min-height: 200px;
  transition: border-color var(--transition);
}
.placeholder-card:hover { border-color: var(--accent); }
.placeholder-icon { font-size: 1.8rem; opacity: 0.25; }
.placeholder-name { font-family: var(--font-display); font-size: 0.9rem; font-weight: 600; color: var(--text-muted); }
.placeholder-sub { font-family: var(--font-mono); font-size: 0.67rem; color: var(--text-dim); }

/* ============================================
   FOOTER
   ============================================ */
footer {
  padding: 28px 0;
  border-top: 1px solid var(--border);
  margin-top: 48px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.footer-copy { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); }
.footer-copy span { color: var(--text-muted); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }

/* ============================================
   FADE-IN
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .projects-section { padding: 48px 0; }
  .page-header { padding-top: calc(var(--nav-h) + 48px); padding-bottom: 48px; }
}
@media (max-width: 520px) {
  .projects-grid { grid-template-columns: 1fr; }
}