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

:root {
  --bg:        #eff6ff;
  --bg2:       #dbeafe;
  --surface:   #ffffff;
  --surface2:  #f0f9ff;
  --border:    rgba(30,58,138,0.1);
  --border2:   rgba(30,58,138,0.22);
  --cyan:      #0ea5e9;
  --cyan-dim:  rgba(14,165,233,0.1);
  --cyan-glow: rgba(14,165,233,0.3);
  --green:     #059669;
  --green-dim: rgba(5,150,105,0.1);
  --purple:    #1e3a8a;
  --purple-dim:rgba(30,58,138,0.08);
  --orange:    #f97316;
  --orange-dim:rgba(249,115,22,0.1);
  --text:      #1e1b4b;
  --text2:     #4c5270;
  --text3:     #8b8fa8;
  --mono:      'JetBrains Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ─── SCROLLBAR ─────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--purple); border-radius: 2px; }

/* ─── SCROLL PROGRESS ───────────────────────────────── */
#progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  z-index: 200;
  transition: width 0.1s linear;
}

/* ─── NAV ───────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.5rem, 5vw, 3rem);
  height: 60px;
  background: rgba(239,246,255,0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s;
}

nav.scrolled { border-color: var(--border2); }

.nav-brand {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  color: var(--text2);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
  letter-spacing: 0.01em;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--purple);
  background: var(--purple-dim);
}

/* ─── HERO ──────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 clamp(1.5rem, 5vw, 3rem);
  overflow: hidden;
}

/* Grid background */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
  pointer-events: none;
}

/* Aurora blobs */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  animation: drift 12s ease-in-out infinite;
}

.blob-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #93c5fd, transparent 70%);
  top: -150px; right: -100px;
  opacity: 0.45;
  animation-delay: 0s;
}

.blob-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #7dd3fc, transparent 70%);
  bottom: -100px; left: 10%;
  opacity: 0.35;
  animation-delay: -4s;
}

.blob-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #6ee7b7, transparent 70%);
  top: 40%; right: 30%;
  opacity: 0.3;
  animation-delay: -8s;
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -20px) scale(1.05); }
  66%       { transform: translate(-20px, 30px) scale(0.97); }
}

.hero-inner {
  position: relative;
  max-width: 900px;
  width: 100%;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.2s forwards;
}

.hero-eyebrow::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--cyan);
  display: inline-block;
}

h1 {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.4s forwards;
}

h1 .name-first { color: var(--text); display: block; }

h1 .name-last {
  color: transparent;
  background: linear-gradient(135deg, #1e3a8a 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  display: block;
}

.hero-tagline {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--text2);
  max-width: 520px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
  padding-left: 1.25rem;
  border-left: 2px solid var(--border2);
  opacity: 0;
  animation: fadeUp 0.7s 0.6s forwards;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.8s forwards;
}

/* ─── BUTTONS ───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  letter-spacing: 0.01em;
}

.btn:hover { transform: translateY(-2px); }

.btn-cyan {
  background: linear-gradient(135deg, var(--purple), var(--cyan));
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(30,58,138,0.3);
}

.btn-cyan:hover {
  box-shadow: 0 8px 30px rgba(30,58,138,0.35);
}

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border2);
}

.btn-ghost:hover {
  border-color: var(--purple);
  background: var(--purple-dim);
  color: var(--purple);
}

/* ─── SCROLL HINT ───────────────────────────────────── */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  opacity: 0;
  animation: fadeIn 1s 1.5s forwards;
}

.scroll-hint span {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
  font-family: var(--mono);
}

.scroll-arrow {
  width: 20px; height: 20px;
  border-right: 1.5px solid var(--text3);
  border-bottom: 1.5px solid var(--text3);
  transform: rotate(45deg);
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50%       { transform: rotate(45deg) translateY(4px); }
}

/* ─── SECTIONS ──────────────────────────────────────── */
.section-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 7rem clamp(1.5rem, 5vw, 3rem);
}

.section-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::after {
  content: '';
  flex: 1;
  max-width: 60px;
  height: 1px;
  background: var(--border2);
}

.section-divider {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ─── REVEAL ANIMATION ──────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── TAGS ───────────────────────────────────────────── */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.28rem 0.65rem;
  border-radius: 5px;
  border: 1px solid var(--border);
  color: var(--text2);
  background: #ffffff;
  transition: all 0.2s;
  cursor: default;
}

.tag:hover        { border-color: var(--purple); color: var(--purple); }
.tag.cyan   { border-color: rgba(14,165,233,0.35);  color: var(--cyan);   background: var(--cyan-dim);   }
.tag.green  { border-color: rgba(5,150,105,0.35);   color: var(--green);  background: var(--green-dim);  }
.tag.purple { border-color: rgba(30,58,138,0.28);   color: var(--purple); background: var(--purple-dim); }
.tag.orange { border-color: rgba(249,115,22,0.35);  color: var(--orange); background: var(--orange-dim); }

/* ─── PROJECT CARDS ─────────────────────────────────── */
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 2px 12px rgba(30,58,138,0.06);
}

.project-card:hover {
  border-color: rgba(30,58,138,0.28);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(30,58,138,0.1), 0 4px 20px rgba(14,165,233,0.08);
}

.browser-bar {
  background: #f8f9ff;
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.browser-dots { display: flex; gap: 5px; }

.browser-dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
}

.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }

.browser-url {
  flex: 1;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.25rem 0.75rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text3);
  margin-left: 0.5rem;
}

.project-body { padding: 2rem; }

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.project-name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--purple);
  text-decoration: none;
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(30,58,138,0.3);
  border-radius: 6px;
  background: var(--purple-dim);
  white-space: nowrap;
  transition: all 0.2s;
}

.project-link-btn:hover {
  background: rgba(30,58,138,0.14);
  border-color: var(--purple);
}

.project-desc {
  color: var(--text2);
  font-size: 0.925rem;
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

/* WIP card */
.badge-wip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--orange);
  background: var(--orange-dim);
  border: 1px solid rgba(249,115,22,0.3);
  border-radius: 20px;
  padding: 0.2rem 0.65rem;
}

.badge-wip::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--orange);
  animation: pulse-dot 1.8s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

.project-card.wip {
  border-style: dashed;
  border-color: rgba(249,115,22,0.25);
  background: #fffbf5;
}

.project-card.wip:hover {
  border-color: rgba(249,115,22,0.5);
  box-shadow: 0 20px 60px rgba(249,115,22,0.1);
}

/* ─── TIMELINE ──────────────────────────────────────── */
.tl-layout {
  display: grid;
  grid-template-columns: 72px 1fr;
  column-gap: 2rem;
  row-gap: 1.5rem;
}

.tl-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 1.75rem;
}

.tl-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--purple);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 2px var(--purple);
  flex-shrink: 0;
}

.tl-dot.active {
  background: var(--orange);
  border-color: var(--bg);
  box-shadow: 0 0 0 2px var(--orange);
  animation: pulse-ring 2s ease-in-out infinite;
}

@keyframes pulse-ring {
  0%, 100% { box-shadow: 0 0 0 2px var(--orange); }
  50%       { box-shadow: 0 0 0 7px rgba(249,115,22,0.15); }
}

.tl-connector {
  flex: 1;
  width: 2px;
  min-height: 16px;
  background: linear-gradient(to bottom, rgba(30,58,138,0.2), rgba(30,58,138,0.05));
  margin-top: 6px;
}

.tl-left.last .tl-connector { display: none; }

.tl-date {
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 500;
  color: var(--text3);
  text-align: center;
  margin-top: 7px;
  line-height: 1.4;
}

.tl-date.active {
  color: var(--orange);
  font-weight: 600;
}

/* ─── FOOTER ─────────────────────────────────────────── */
footer {
  padding: 2rem clamp(1.5rem, 5vw, 3rem);
  border-top: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-left {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text3);
}

.footer-links { display: flex; gap: 1.5rem; }

.footer-links a {
  font-size: 0.78rem;
  color: var(--text3);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--text2); }

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

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ─── RESPONSIVE ─────────────────────────────────────── */
@media (max-width: 640px) {
  h1 { font-size: 3rem; }
  .tl-layout { grid-template-columns: 52px 1fr; column-gap: 1rem; }
}

@media (max-width: 480px) {
  .nav-links { display: none; }
  .tl-left   { display: none; }
  .tl-layout { grid-template-columns: 1fr; }
}