/* Portfolio CSS recovery foundation
   Restores the structural rules that were accidentally removed from styles.css.
   Loaded after styles.css so the current visual system remains intact. */
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
html { scroll-behavior: smooth; }
body {
  color: var(--text, #f7f9ff);
  font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-0, #080b12);
  line-height: 1.6;
}
body, button, input { font: inherit; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
button { cursor: pointer; }

.noise { position: fixed; inset: 0; pointer-events: none; z-index: 9999; opacity: .035; background-image: radial-gradient(#fff .6px, transparent .6px); background-size: 4px 4px; }

.global-nav { position: sticky; top: 0; z-index: 1000; width: 100%; border-bottom: 1px solid var(--line, #26344f); background: var(--glass, rgba(10,17,30,.92)); backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%); }
.nav-container, .hero, main, footer { width: min(1060px, 92vw); margin-inline: auto; }
.nav-container { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 16px; position: relative; }
.nav-logo { color: var(--text) !important; text-decoration: none !important; font-weight: 700; letter-spacing: -.02em; }
.nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 5px; margin-left: auto; }
.nav-link { display: inline-flex; align-items: center; min-height: 42px; padding: 9px 12px; border: 1px solid transparent; border-radius: 9px; color: var(--text-dim) !important; text-decoration: none !important; font-size: .82rem; font-weight: 600; transition: .2s ease; }
.nav-link:hover, .nav-link.active { color: var(--brand) !important; background: rgba(99,230,215,.08); border-color: rgba(99,230,215,.18); transform: translateY(-1px); }
.nav-link.external { color: var(--accent) !important; }
.theme-toggle, .nav-toggle { appearance: none; border: 1px solid var(--line, #26344f); background: rgba(124,183,255,.055); color: var(--text); border-radius: 10px; min-height: 40px; padding: 8px 12px; font: 600 .72rem "JetBrains Mono", monospace; }
.theme-toggle:hover, .nav-toggle:hover { color: var(--brand); border-color: rgba(99,230,215,.45); background: rgba(99,230,215,.08); }
.nav-toggle { display: none; font-size: 1.3rem; }
.page-rail { display: none !important; }

.hero { position: relative; padding: 105px 0 70px; min-height: 650px; display: flex; flex-direction: column; justify-content: center; }
.hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; border-radius: 50%; }
.hero::before { width: 320px; height: 320px; left: -100px; top: 130px; background: radial-gradient(circle, rgba(182,156,255,.13), transparent 70%); filter: blur(8px); }
.hero::after { width: 420px; height: 420px; right: -90px; top: 55px; background: radial-gradient(circle, rgba(124,183,255,.18), rgba(99,230,215,.06) 30%, transparent 70%); filter: blur(8px); }
.welcome-line, .tag, .proof-line, .metrics-row, .cta-row, .command-hint { position: relative; z-index: 1; }
.welcome-line { margin: 0 0 10px; color: var(--brand); font: .72rem "JetBrains Mono", monospace; letter-spacing: .14em; }
.tag { color: var(--accent); font-size: .72rem; letter-spacing: .16em; }
h1 { position: relative; z-index: 1; margin: 8px 0 10px; max-width: 900px; font-size: clamp(3rem,8vw,6.4rem); letter-spacing: -.065em; line-height: .96; }
h2 { margin: 0 0 14px; color: var(--brand); font-size: clamp(1.35rem,2.5vw,1.8rem); }
h3 { margin: 0 0 8px; }
p, li { color: var(--text-dim); line-height: 1.7; }
.lead { max-width: 760px; font-size: clamp(1rem,1.7vw,1.16rem); }

main { padding-bottom: 50px; }
section { scroll-margin-top: 90px; }
.panel, .project-item, .project-card, .tech-category, .skill-category, .flagship-item, .philosophy-card, .stat-card, .log-entry.large, .quick-action { background: var(--glass); border: 1px solid var(--line-soft, #26344f); border-radius: 16px; box-shadow: var(--shadow, 0 22px 60px rgba(0,0,0,.42)); }
.panel, .project-item { padding: 20px; margin-bottom: 18px; }
.panel + .panel { margin-top: 18px; }

.projects-grid, .tech-grid, .skills-grid, .tech-breakdown, .stats-grid, .flagship-list, .quick-actions-grid, .focus-grid { display: grid; gap: 14px; }
.projects-grid { grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); }
.quick-actions-grid, .focus-grid { grid-template-columns: repeat(auto-fit, minmax(210px,1fr)); }
.quick-action { display: block; padding: 18px; text-decoration: none; transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease; }
.quick-action:hover { transform: translateY(-4px); border-color: rgba(99,230,215,.4); }

.project-card { padding: 18px; min-height: 250px; overflow: hidden; cursor: pointer; }
.project-card .tags, .project-card .tech-tags, .tags, .tech-tags, .project-links, .project-links-section, .project-meta, .cv-contact { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span, .tech-tags span { font: .72rem "JetBrains Mono", monospace; color: var(--accent-2); border: 1px solid var(--line); border-radius: 999px; padding: 4px 9px; background: rgba(124,183,255,.06); }
.badge { display: inline-block; margin-bottom: 10px; padding: 4px 10px; border-radius: 999px; font-size: .7rem; font-weight: 700; text-transform: uppercase; }
.badge.public { background: rgba(88,213,201,.16); color: var(--accent); }
.badge.private { background: rgba(255,123,138,.17); color: var(--danger); }
.badge.academic { background: rgba(124,183,255,.16); color: var(--accent-2); }
.badge.learning { background: rgba(99,230,215,.10); color: var(--brand); }
.card-cta { margin-top: 12px; color: var(--brand); font-weight: 600; }

.filter-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 16px; }
.filter-btn { border: 1px solid var(--line); background: rgba(124,183,255,.045); color: var(--text-dim); border-radius: 999px; min-height: 40px; padding: 8px 14px; font: 600 .76rem "JetBrains Mono",monospace; }
.filter-btn:hover, .filter-btn.active { color: var(--brand); border-color: rgba(99,230,215,.5); background: rgba(99,230,215,.08); }
.project-search-input { width: 100%; min-height: 46px; border: 1px solid var(--line); border-radius: 11px; background: rgba(124,183,255,.045); color: var(--text); padding: 11px 14px; }

.btn, .btn-link { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 11px 18px; border-radius: 11px; text-decoration: none; font-weight: 600; }
.btn { background: linear-gradient(135deg,var(--brand),var(--brand-strong)); color: #041514; border: 1px solid rgba(99,230,215,.45); box-shadow: 0 12px 32px rgba(44,201,184,.18); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); box-shadow: none; }
.btn:hover { transform: translateY(-2px); }

ul { padding-left: 1.25rem; }
.identity ul, .features-list, .highlights-list, .outcomes-list, .about-list, .project-highlights, .achievements-list, .development-list, .projects-list, .cv-plain-list { list-style: none; margin: 0; padding: 0; }
.identity li, .features-list li, .highlights-list li, .outcomes-list li, .about-list li, .project-highlights li, .achievements-list li, .development-list li, .projects-list li, .cv-plain-list li { position: relative; padding: 7px 0 7px 20px; }
.identity li::before, .features-list li::before, .highlights-list li::before, .outcomes-list li::before, .about-list li::before, .projects-list li::before { content: "▸"; color: var(--accent); position: absolute; left: 0; }
.project-highlights li::before, .achievements-list li::before, .development-list li::before { content: "★"; color: var(--brand); position: absolute; left: 0; }

.page-header { position: relative; overflow: hidden; padding: 70px 0 30px; }
.page-header p { position: relative; z-index: 1; }
.cv-two-col { display: grid; grid-template-columns: minmax(0,1fr) minmax(260px,.38fr); gap: 20px; }
.cv-sidebar { order: 2; }
.cv-main-col { order: 1; }
.project-item .project-links { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

footer { padding: 35px 0 50px; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 4px; }

@media (max-width: 768px) {
  .global-nav .nav-container { min-height: 64px; }
  .nav-logo { max-width: calc(100% - 110px); overflow: hidden; text-overflow: ellipsis; }
  .theme-toggle { margin-left: auto; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links { position: absolute; left: 12px; right: 12px; top: calc(100% + 8px); display: none; flex-direction: column; align-items: stretch; gap: 4px; padding: 10px; margin: 0; border: 1px solid var(--line-soft); border-radius: 15px; background: var(--glass); box-shadow: var(--shadow); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }
  .nav-links.is-open { display: flex; }
  .nav-links .nav-link { width: 100%; justify-content: center; text-align: center; padding: 12px; }
  .hero { min-height: auto; padding: 82px 0 48px; }
  .metrics-row { grid-template-columns: repeat(2,minmax(0,1fr)) !important; }
  .cv-two-col { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .hero { padding-top: 68px; }
  h1 { font-size: clamp(2.7rem,15vw,4.3rem); }
  .metrics-row { grid-template-columns: 1fr !important; }
  .project-item .project-links, .cv-cta-row { flex-direction: column; align-items: stretch; }
  .project-item .btn-link, .cv-cta-row .btn { justify-content: center; width: 100%; }
}
@media (prefers-reduced-motion: reduce) { *,*::before,*::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; } }

/* Project switcher */
.project-switcher { margin: 0.75rem 0 1.25rem; }
.project-switcher-top { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1.25rem; margin-bottom: 0.6rem; font-size: 0.9rem; }
.project-switcher-links { display: flex; flex-wrap: wrap; gap: 0.4rem 0.5rem; align-items: center; }
.project-chip { display: inline-flex; align-items: center; min-height: 30px; padding: 0.2rem 0.55rem; border-radius: 999px; font-size: 0.78rem; line-height: 1.2; text-decoration: none; border: 1px solid var(--line, #cbd5e1); color: var(--text-dim, #334155); background: rgba(248, 250, 252, 0.72); transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease; }
.project-chip:hover { color: var(--brand, #0f766e); border-color: rgba(99, 230, 215, 0.45); background: rgba(99, 230, 215, 0.08); transform: translateY(-1px); }
.project-chip.active { background: var(--brand-strong, #0f3460); color: #fff; border-color: var(--brand-strong, #0f3460); }
html[data-theme="light"] .project-chip { background: rgba(248, 250, 252, 0.88); color: var(--text-dim, #334155); }
html[data-theme="light"] .project-chip.active { background: var(--brand, #0f766e); color: #fff; border-color: var(--brand, #0f766e); }
@media (max-width: 560px) {
  .project-switcher-top { align-items: flex-start; gap: 0.5rem 0.9rem; }
  .project-switcher-links { gap: 0.35rem; }
  .project-chip { font-size: 0.74rem; min-height: 32px; }
}

/* Light mode polish */
html[data-theme="light"] { --brand: #0d9488; --brand-strong: #0f766e; --text: #0f172a; --text-dim: #475569; }
html[data-theme="light"] body {
  background:
    radial-gradient(circle at 86% 5%, rgba(37, 99, 235, 0.11), transparent 32%),
    radial-gradient(circle at 8% 18%, rgba(15, 118, 110, 0.09), transparent 36%),
    radial-gradient(circle at 70% 75%, rgba(124, 58, 237, 0.05), transparent 30%),
    linear-gradient(145deg, #f4f8fd, #eaf2fa 45%, #e2ecf7);
}
html[data-theme="light"] .global-nav { background: rgba(255, 255, 255, 0.88); border-bottom: 1px solid rgba(15, 23, 42, 0.07); box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05); }
html[data-theme="light"] .panel,
html[data-theme="light"] .project-item,
html[data-theme="light"] .project-card,
html[data-theme="light"] .tech-category,
html[data-theme="light"] .skill-category,
html[data-theme="light"] .flagship-item,
html[data-theme="light"] .philosophy-card,
html[data-theme="light"] .stat-card,
html[data-theme="light"] .log-entry.large,
html[data-theme="light"] .quick-action {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
}
html[data-theme="light"] .btn { color: #ffffff; background: linear-gradient(135deg, #0d9488, #0f766e); border-color: rgba(13, 148, 136, 0.45); box-shadow: 0 10px 26px rgba(13, 148, 136, 0.22); }
html[data-theme="light"] .btn-ghost { color: var(--text); border-color: rgba(15, 23, 42, 0.14); background: rgba(255, 255, 255, 0.55); }
html[data-theme="light"] .nav-link:hover,
html[data-theme="light"] .nav-link.active { background: rgba(13, 148, 136, 0.08); border-color: rgba(13, 148, 136, 0.18); }
html[data-theme="light"] .theme-toggle,
html[data-theme="light"] .nav-toggle { background: rgba(15, 23, 42, 0.04); border-color: rgba(15, 23, 42, 0.12); }
html[data-theme="light"] .theme-toggle:hover,
html[data-theme="light"] .nav-toggle:hover { background: rgba(13, 148, 136, 0.08); border-color: rgba(13, 148, 136, 0.35); }
html[data-theme="light"] .filter-btn:hover,
html[data-theme="light"] .filter-btn.active { background: rgba(13, 148, 136, 0.08); border-color: rgba(13, 148, 136, 0.4); }
html[data-theme="light"] .project-search-input { background: rgba(255, 255, 255, 0.85); border-color: rgba(15, 23, 42, 0.12); }
html[data-theme="light"] .tags span,
html[data-theme="light"] .tech-tags span { background: rgba(37, 99, 235, 0.06); border-color: rgba(15, 23, 42, 0.1); }

/* Featured Work — both themes: grid gap + badge in flow (fixes joined/stacked look) */
#featured-projects .projects-grid {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)) !important;
  gap: 18px !important;
  align-items: stretch !important;
}
#featured-projects .project-card {
  position: relative !important;
  display: flex !important;
  flex-direction: column !important;
  min-height: 260px !important;
  overflow: hidden !important;
}
#featured-projects .project-card[data-tags*="health"]::before {
  content: none !important;
  display: none !important;
}
#featured-projects .project-card .badge,
#featured-projects .project-card[data-tags*="health"] .badge {
  position: static !important;
  display: inline-block !important;
  margin: 0 0 10px 0 !important;
  top: auto !important;
  right: auto !important;
}
#featured-projects .project-card .tags {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 7px !important;
  margin-top: auto;
}
#featured-projects .project-card .card-cta { margin-top: 12px; }

/* Light mode Featured surfaces */
html[data-theme="light"] #featured-projects .project-card,
html[data-theme="light"] #featured-projects .project-card[data-tags*="health"],
html[data-theme="light"] #featured-projects .project-card[data-tags*="education"],
html[data-theme="light"] #featured-projects .project-card[data-tags*="systems"] {
  background: #ffffff !important;
  background-image: none !important;
  border: 1px solid rgba(15, 23, 42, 0.10) !important;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.07) !important;
  color: #0f172a;
}
html[data-theme="light"] #featured-projects .project-card:hover {
  border-color: rgba(13, 148, 136, 0.40) !important;
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.10) !important;
}
html[data-theme="light"] #featured-projects .project-card h3 { color: #0f172a !important; }
html[data-theme="light"] #featured-projects .project-card .desc,
html[data-theme="light"] #featured-projects .project-card p { color: #475569 !important; }
html[data-theme="light"] #featured-projects .project-card .card-cta { color: #0d9488 !important; }
html[data-theme="light"] #featured-projects .project-card .tags span {
  color: #334155 !important;
  background: #f1f5f9 !important;
  border: 1px solid #e2e8f0 !important;
}
html[data-theme="light"] #featured-projects .badge,
html[data-theme="light"] #featured-projects .badge.public {
  background: rgba(13, 148, 136, 0.12) !important;
  color: #0f766e !important;
}

/* Snapshot chips (Academic Engineering) */
.snapshot-chips { display: flex; flex-wrap: wrap; gap: 0.4rem 0.5rem; margin-top: 12px; }
.snapshot-chips span {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font: 500 0.72rem "JetBrains Mono", monospace;
  border: 1px solid var(--line, #26344f);
  color: var(--text-dim, #b9c4d6);
  background: rgba(124, 183, 255, 0.06);
}
html[data-theme="light"] .snapshot-chips span {
  color: #334155;
  background: #f1f5f9;
  border-color: #e2e8f0;
}