/* ============================================================
   RISHAV BHATTARAI — PREMIUM PORTFOLIO CSS
   Theme: Deep Midnight Navy · Glassmorphism · Electric Accents
   ============================================================ */

/* ── TOKENS ─────────────────────────────────────────── */
:root {
  --navy-900: #050c1a;
  --navy-800: #07111f;
  --navy-700: #0a1628;
  --navy-600: #0f1e35;
  --navy-500: #162338;

  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.09);
  --glass-border-hover: rgba(255, 255, 255, 0.18);
  --glass-blur: blur(14px);

  --electric: #3b82f6;
  --electric-dim: rgba(59, 130, 246, 0.15);
  --electric-glow: rgba(59, 130, 246, 0.35);

  --sf-blue: #00A1E0;
  --sf-blue-dim: rgba(0, 161, 224, 0.12);
  --sf-blue-glow: rgba(0, 161, 224, 0.4);

  --text-primary: #f0f4ff;
  --text-secondary: rgba(210, 220, 240, 0.72);
  --text-muted: rgba(160, 175, 210, 0.55);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);

  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --max-width: 1160px;
  --section-gap: clamp(80px, 12vw, 140px);
}

/* ── RESET ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--navy-900);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
button { background: none; border: none; cursor: pointer; font-family: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ── ACCESSIBILITY: FOCUS & MOTION ──────────────────── */
a:focus-visible,
button:focus-visible,
.tnode:focus-visible {
  outline: 2px solid var(--electric);
  outline-offset: 3px;
  border-radius: 4px;
}

[id] { scroll-margin-top: 90px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── SCROLLBAR ───────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--navy-800); }
::-webkit-scrollbar-thumb { background: rgba(59,130,246,0.4); border-radius: 99px; }

/* ── SELECTION ───────────────────────────────────────── */
::selection { background: var(--electric-dim); color: #fff; }

/* ── UTILITIES ───────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px);
}

/* ── TOP HORIZONTAL NAVIGATION ──────────────────────── */
.nav-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 80px;
  height: 70px;
  background: linear-gradient(180deg, rgba(5,12,26,0.95) 0%, rgba(5,12,26,0.85) 100%);
  border-bottom: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  z-index: 800;
  display: flex;
  align-items: center;
}

.nav-top__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 0 clamp(20px, 5vw, 48px);
}

.nav-top__logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--text-primary);
  transition: color var(--transition);
}

.nav-top__logo:hover {
  color: var(--electric);
}

.nav-top__menu {
  display: flex;
  align-items: center;
}

.nav-top__links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-top__links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-top__links a:hover {
  color: var(--electric);
}

.nav-top__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--electric);
  transition: width var(--transition);
}

.nav-top__links a:hover::after {
  width: 100%;
}

/* Adjust body for top nav */
body {
  padding-top: 70px;
  margin-right: 80px;
}

/* ── NAVIGATION - RIGHT SIDEBAR ────────────────────── */
.nav-sidebar {
  position: fixed;
  right: 0;
  top: 0;
  height: 100svh;
  width: 80px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, rgba(5,12,26,0.8) 0%, rgba(5,12,26,0.6) 100%);
  border-left: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  padding: 20px 0;
}

.nav-sidebar__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.nav-sidebar__list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  list-style: none;
}

.nav-sidebar__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 12px;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  position: relative;
  color: var(--text-secondary);
}

.nav-sidebar__link:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
}

.nav-sidebar__link.active {
  color: var(--electric);
  background: var(--electric-dim);
}

.nav-sidebar__link svg {
  transition: color var(--transition);
}

.nav-sidebar__label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity var(--transition);
  max-width: 60px;
  text-align: center;
  line-height: 1.2;
  display: none;
}

.nav-sidebar__link:hover .nav-sidebar__label {
  opacity: 1;
}

.nav-sidebar__toggle {
  display: none;
  position: absolute;
  bottom: 20px;
  width: 24px;
  height: 24px;
  flex-direction: column;
  gap: 4px;
  padding: 0;
}

.nav-sidebar__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: all var(--transition);
}

.nav-sidebar__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}
.nav-sidebar__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-sidebar__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Adjust body for sidebar */
/* (padding-top and margin-right handled above in top nav section) */

/* ── HEADER SUMMARY ────────────────────────────────── */
.header-summary {
  min-height: 80svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px clamp(20px, 5vw, 48px) 60px;
  position: relative;
  overflow: hidden;
}

.header-summary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 60% 60% at 50% 30%, rgba(59,130,246,0.08), transparent 60%),
    radial-gradient(ellipse 40% 40% at 80% 70%, rgba(0,161,224,0.06), transparent 60%);
  pointer-events: none;
}

.header-summary__content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  margin: 0 auto;
}

.header-summary__intro {
  text-align: center;
  margin-bottom: 36px;
}

.header-summary__eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--electric);
  margin-bottom: 12px;
  opacity: 0;
  animation: fadeUp 0.8s 0.15s forwards;
}

.header-summary__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp 0.8s 0.25s forwards;
}

.header-summary__description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp 0.8s 0.35s forwards;
}

.header-summary__skills {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 44px;
  opacity: 0;
  animation: fadeUp 0.8s 0.45s forwards;
}

@media (max-width: 640px) {
  .header-summary__skills {
    grid-template-columns: 1fr;
  }
}

.skill-group {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  backdrop-filter: var(--glass-blur);
}

.skill-group__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--electric);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 14px;
  position: relative;
}

.skill-list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--sf-blue);
  font-weight: 700;
}

.header-summary__cta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  opacity: 0;
  animation: fadeUp 0.8s 0.55s forwards;
}

/* ── BUTTONS ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: linear-gradient(135deg, var(--electric), #6366f1);
  color: #fff;
  box-shadow: 0 0 24px rgba(59,130,246,0.3);
}
.btn--primary:hover {
  box-shadow: 0 0 40px rgba(59,130,246,0.5);
  transform: translateY(-2px);
}
.btn--ghost {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  backdrop-filter: var(--glass-blur);
}
.btn--ghost:hover {
  border-color: var(--glass-border-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* ── SECTION COMMON ──────────────────────────────────── */
.section { padding: var(--section-gap) 0; }
.section__header {
  text-align: center;
  margin-bottom: 36px;
}
.section__eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--electric);
  margin-bottom: 14px;
}
.section__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section__subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 300;
  max-width: 500px;
  margin: 0 auto;
}

/* ── FILTER BAR ──────────────────────────────────────── */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 52px;
  flex-wrap: wrap;
  position: relative;
}
.filter-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition);
  letter-spacing: 0.01em;
}
.filter-btn svg { opacity: 0.7; transition: opacity var(--transition); }
.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--glass-border-hover);
  background: rgba(255,255,255,0.07);
}
.filter-btn.active {
  background: linear-gradient(135deg, rgba(59,130,246,0.2), rgba(99,102,241,0.15));
  border-color: rgba(59,130,246,0.5);
  color: #93c5fd;
  box-shadow: 0 0 20px rgba(59,130,246,0.15);
}
.filter-btn.active svg { opacity: 1; }

/* ── PROJECT GRID ────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}

/* ── CARD ────────────────────────────────────────────── */
.card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: var(--glass-blur);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  /* animation helpers */
  opacity: 1;
  transform: scale(1) translateY(0);
}
.card.hidden {
  opacity: 0;
  transform: scale(0.94) translateY(12px);
  pointer-events: none;
  position: absolute;
  visibility: hidden;
}
.card.animating-in {
  animation: cardIn 0.42s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
@keyframes cardIn {
  from { opacity: 0; transform: scale(0.92) translateY(16px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.card:hover {
  transform: scale(1.035) translateY(-3px);
  border-color: var(--glass-border-hover);
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.card--wide { grid-column: span 2; }
@media (max-width: 720px) { .card--wide { grid-column: span 1; } }

/* card glow */
.card__glow {
  position: absolute;
  top: -60px; right: -60px;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(59,130,246,0.12), transparent 70%);
  pointer-events: none;
  transition: opacity var(--transition);
}
.card:hover .card__glow { opacity: 1.5; }

/* salesforce card */
.card--salesforce {
  border-color: rgba(0,161,224,0.2);
}
.card--salesforce:hover {
  border-color: rgba(0,161,224,0.5);
  box-shadow: 0 20px 60px rgba(0,0,0,0.35), 0 0 40px rgba(0,161,224,0.12);
}
.card__sf-glow {
  position: absolute;
  top: -50px; right: -50px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, var(--sf-blue-dim), transparent 70%);
  pointer-events: none;
}
.card__cloud-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--sf-blue);
  background: var(--sf-blue-dim);
  border: 1px solid rgba(0,161,224,0.25);
  border-radius: 99px;
  padding: 4px 12px;
  align-self: flex-start;
}

.card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.card__icon-wrap {
  width: 44px; height: 44px;
  background: var(--electric-dim);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--electric);
  flex-shrink: 0;
}
.card__icon-wrap--sf {
  background: var(--sf-blue-dim);
  border-color: rgba(0,161,224,0.3);
  color: var(--sf-blue);
}
.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}
.card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.07rem;
  line-height: 1.3;
  color: var(--text-primary);
}
.card__desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 300;
  line-height: 1.6;
}
.card__bullets {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 0;
}
.card__bullets li {
  font-size: 0.83rem;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
}
.card__bullets li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--electric);
  font-weight: 700;
}
.card--salesforce .card__bullets li::before { color: var(--sf-blue); }
.card__stack {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  padding-top: 6px;
  border-top: 1px solid var(--glass-border);
  margin-top: auto;
}
.card__footer {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.card__link {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition);
}
.card__link:hover { color: var(--text-primary); }
.card__link--primary { color: var(--electric); }
.card__link--primary:hover { color: #93c5fd; }
.card__badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 99px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.card__badge--sf {
  background: var(--sf-blue-dim);
  border-color: rgba(0,161,224,0.3);
  color: var(--sf-blue);
}

/* ── TAGS ────────────────────────────────────────────── */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.tag--red    { background: rgba(239,68,68,0.15); color: #fca5a5; border: 1px solid rgba(239,68,68,0.25); }
.tag--blue   { background: rgba(59,130,246,0.15); color: #93c5fd; border: 1px solid rgba(59,130,246,0.25); }
.tag--green  { background: rgba(34,197,94,0.12); color: #86efac; border: 1px solid rgba(34,197,94,0.22); }
.tag--orange { background: rgba(249,115,22,0.15); color: #fdba74; border: 1px solid rgba(249,115,22,0.25); }
.tag--purple { background: rgba(168,85,247,0.15); color: #d8b4fe; border: 1px solid rgba(168,85,247,0.25); }
.tag--teal   { background: rgba(20,184,166,0.15); color: #5eead4; border: 1px solid rgba(20,184,166,0.25); }
.tag--python { background: rgba(55,118,171,0.2); color: #7dd3fc; border: 1px solid rgba(55,118,171,0.3); }
.tag--dark   { background: rgba(255,255,255,0.07); color: var(--text-secondary); border: 1px solid var(--glass-border); }
.tag--muted  { background: rgba(255,255,255,0.05); color: var(--text-muted); border: 1px solid var(--glass-border); }
.tag--sf     { background: var(--sf-blue-dim); color: var(--sf-blue); border: 1px solid rgba(0,161,224,0.3); }

/* ── TIMELINE ────────────────────────────────────────── */
.timeline-section {
  background: linear-gradient(180deg, transparent 0%, rgba(10,22,40,0.6) 50%, transparent 100%);
}
.timeline-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 40px;
  align-items: start;
}
.timeline-track {
  position: relative;
  padding-left: 20px;
}

/* scroll-draw line */
.timeline-line-wrap {
  position: absolute;
  left: 20px;
  top: 28px;
  bottom: 28px;
  width: 2px;
  background: rgba(255,255,255,0.07);
  border-radius: 99px;
  overflow: hidden;
}
.timeline-line {
  width: 100%;
  height: 0%;
  background: linear-gradient(to bottom, var(--electric), #6366f1, var(--sf-blue));
  border-radius: 99px;
  transition: height 0.6s cubic-bezier(0.4,0,0.2,1);
}
.timeline-nodes {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* timeline node */
.tnode {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 18px 16px 52px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  text-align: left;
  cursor: pointer;
  position: relative;
  transition: all var(--transition);
  width: 100%;
}
.tnode:hover {
  background: var(--glass-bg);
  border-color: var(--glass-border);
}
.tnode.tnode--active {
  background: rgba(59,130,246,0.07);
  border-color: rgba(59,130,246,0.25);
}
.tnode__dot {
  position: absolute;
  left: 11px;
  width: 38px; height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 2px solid;
  flex-shrink: 0;
  transition: all var(--transition);
}
.tnode__dot--sf   { background: var(--sf-blue-dim);    border-color: var(--sf-blue);       color: var(--sf-blue); }
.tnode__dot--java { background: rgba(109,179,63,0.12); border-color: #6db33f;              color: #86efac; }
.tnode__dot--edu  { background: rgba(168,85,247,0.12); border-color: rgba(168,85,247,0.6); color: #d8b4fe; }

.tnode--active .tnode__dot { box-shadow: 0 0 16px rgba(59,130,246,0.4); }
.tnode--active .tnode__dot--sf   { box-shadow: 0 0 16px var(--sf-blue-glow); }

.tnode__meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}
.tnode__date {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 400;
}
.tnode__label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}
.tnode__org {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 300;
}
.tnode__badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 99px;
  letter-spacing: 0.06em;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}
.tnode__badge--current {
  background: rgba(34,197,94,0.12);
  border-color: rgba(34,197,94,0.3);
  color: #86efac;
}

/* ── DETAIL PANEL ────────────────────────────────────── */
.timeline-detail {
  position: sticky;
  top: 90px;
}
.tdetail {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 36px;
  backdrop-filter: var(--glass-blur);
  animation: detailFade 0.35s ease forwards;
}
@keyframes detailFade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.tdetail__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--glass-border);
}
.tdetail__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  margin-bottom: 6px;
}
.tdetail__org {
  font-size: 0.9rem;
  color: var(--electric);
  font-weight: 500;
  margin-bottom: 4px;
}
.tdetail__date {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.tdetail__logo {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.tdetail__logo--sf   { background: var(--sf-blue-dim);    border: 1px solid rgba(0,161,224,0.3); color: var(--sf-blue); }
.tdetail__logo--java { background: rgba(109,179,63,0.12); border: 1px solid rgba(109,179,63,0.3); color: #86efac; }
.tdetail__logo--edu  { background: rgba(168,85,247,0.12); border: 1px solid rgba(168,85,247,0.3); color: #d8b4fe; }

.tdetail__bullets {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}
.tdetail__bullets li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
  line-height: 1.55;
}
.tdetail__bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--electric);
  font-size: 0.75rem;
  top: 3px;
}
.tdetail__bullets strong { color: var(--text-primary); }
.tdetail__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ── CONTACT ─────────────────────────────────────────── */
.contact-section {
  padding-bottom: calc(var(--section-gap) * 0.8);
}
.contact-card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: clamp(40px, 8vw, 80px);
  backdrop-filter: var(--glass-blur);
  text-align: center;
  overflow: hidden;
}
.contact-card__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(59,130,246,0.09), transparent 70%);
  pointer-events: none;
}
.contact-card .section__eyebrow { margin-bottom: 16px; }
.contact-card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.contact-card__body {
  color: var(--text-secondary);
  font-weight: 300;
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.contact-card__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* ── FOOTER ──────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 28px 0;
}
.footer__copy {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── ANIMATIONS ──────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 900px) {
  .timeline-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .timeline-detail {
    position: static;
  }
  .timeline-track { padding-left: 16px; }
  .tnode { padding-left: 48px; }
  .tnode__dot { left: 7px; width: 34px; height: 34px; }
  .timeline-line-wrap { left: 16px; top: 24px; bottom: 24px; }
}

@media (max-width: 768px) {
  /* Hide sidebar on mobile, show toggle button */
  body {
    margin-right: 0;
  }
  
  .nav-sidebar {
    width: 100%;
    height: auto;
    position: fixed;
    bottom: 0;
    right: 0;
    top: auto;
    border-left: none;
    border-top: 1px solid var(--glass-border);
    flex-direction: row;
    justify-content: space-around;
    padding: 12px 0;
  }
  
  .nav-sidebar__content {
    flex-direction: row;
    gap: 0;
  }
  
  .nav-sidebar__list {
    flex-direction: row;
    gap: 0;
  }
  
  .nav-sidebar__link {
    flex-direction: row;
    gap: 8px;
    padding: 8px 12px;
  }
  
  .nav-sidebar__label {
    opacity: 1;
    max-width: none;
    font-size: 0.7rem;
  }
  
  .nav-sidebar__toggle {
    display: none;
  }

  /* Header adjustments */
  .header-summary {
    min-height: 70svh;
    padding: 80px clamp(20px, 5vw, 48px) 100px;
  }
  
  .header-summary__skills {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 32px;
  }

  /* Projects adjustments */
  .projects-grid { 
    grid-template-columns: 1fr; 
  }
  
  .filter-bar { 
    gap: 8px; 
    flex-wrap: wrap;
  }
  
  .filter-btn { 
    padding: 9px 16px; 
    font-size: 0.82rem; 
  }
  
  .tdetail { 
    padding: 24px 20px; 
  }
  
  .header-summary__cta { 
    flex-direction: column; 
    align-items: center;
  }
  
  .header-summary__cta .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .header-summary {
    padding-top: 60px;
    padding-bottom: 120px;
  }
  
  .header-summary__title {
    font-size: clamp(1.8rem, 5vw, 2.4rem);
  }
  
  .tdetail__head { 
    flex-direction: column; 
  }
  
  .tnode__badge { 
    display: none; 
  }
  
  .nav-sidebar {
    padding: 8px 0;
  }
  
  .nav-sidebar__link {
    padding: 6px 8px;
  }
}