/* ========================================================
 * Weslffy.github.io · Stylesheet
 * Theme: dark / light  ·  Accent: cyan + purple + pink
 * ====================================================== */

/* ---------- Design tokens ---------- */
:root {
  --bg:        #0a0a14;
  --bg-soft:   #11122a;
  --panel:     rgba(255, 255, 255, 0.04);
  --panel-2:   rgba(255, 255, 255, 0.08);
  --border:    rgba(255, 255, 255, 0.10);
  --border-2:  rgba(255, 255, 255, 0.18);
  --text:      #e6ebf2;
  --muted:     #8a93a6;
  --hl:        #ffffff;

  --c1: #00e5ff;   /* cyan      */
  --c2: #b14bff;   /* purple    */
  --c3: #ff4d8d;   /* pink      */
  --c4: #ffd166;   /* warm      */

  --grad:     linear-gradient(90deg, var(--c1), var(--c2) 50%, var(--c3));
  --grad-soft:linear-gradient(135deg, rgba(0,229,255,.15), rgba(177,75,255,.15) 60%, rgba(255,77,141,.15));

  --shadow-lg: 0 30px 80px -20px rgba(0,0,0,.6), 0 10px 30px -10px rgba(0,229,255,.18);
  --shadow-glow: 0 0 0 1px rgba(0,229,255,.35), 0 10px 40px -5px rgba(0,229,255,.35);

  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1180px;

  --ease: cubic-bezier(.2,.7,.2,1);
}

[data-theme="light"] {
  --bg:        #f4f5fb;
  --bg-soft:   #ffffff;
  --panel:     rgba(255, 255, 255, 0.72);
  --panel-2:   rgba(255, 255, 255, 0.92);
  --border:    rgba(15, 23, 42, 0.10);
  --border-2:  rgba(15, 23, 42, 0.18);
  --text:      #0f172a;
  --muted:     #5b6478;
  --hl:        #0f172a;
}

/* ---------- Base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  cursor: none; /* pairs with the custom cursor */
}

@media (pointer: coarse), (hover: none) {
  body { cursor: auto; }
  .cursor-dot, .cursor-ring { display: none !important; }
}

img { max-width: 100%; display: block; }

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s var(--ease), opacity .2s var(--ease);
}

::selection { background: rgba(0, 229, 255, .35); color: #fff; }

/* Custom scrollbar */
::-webkit-scrollbar       { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--c2), var(--c1));
  border-radius: 8px;
}

/* ---------- Background layers ---------- */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
  pointer-events: none;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 80%);
  opacity: .55;
}

.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(600px 400px at 15% 10%, rgba(0,229,255,.18), transparent 60%),
    radial-gradient(700px 500px at 85% 30%, rgba(177,75,255,.22), transparent 60%),
    radial-gradient(500px 400px at 50% 100%, rgba(255,77,141,.16), transparent 60%);
  animation: glowShift 14s ease-in-out infinite alternate;
}

@keyframes glowShift {
  0%   { transform: translate3d(0,0,0) scale(1); }
  100% { transform: translate3d(-20px,30px,0) scale(1.08); }
}

[data-theme="light"] .bg-grid {
  background-image:
    linear-gradient(rgba(15,23,42,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,23,42,.06) 1px, transparent 1px);
  opacity: 1;
}
[data-theme="light"] .bg-glow {
  background:
    radial-gradient(600px 400px at 15% 10%, rgba(0,150,200,.18), transparent 60%),
    radial-gradient(700px 500px at 85% 30%, rgba(150,80,255,.18), transparent 60%),
    radial-gradient(500px 400px at 50% 100%, rgba(255,100,160,.14), transparent 60%);
}

/* ---------- Custom cursor ---------- */
.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  will-change: transform;
}
.cursor-dot {
  width: 6px; height: 6px;
  background: var(--c1);
  box-shadow: 0 0 12px var(--c1);
  transition: transform .12s var(--ease);
}
.cursor-ring {
  width: 36px; height: 36px;
  border: 1.5px solid rgba(0,229,255,.6);
  transition: width .2s var(--ease), height .2s var(--ease), border-color .2s, opacity .2s;
}
.cursor-ring.hover {
  width: 64px; height: 64px;
  border-color: var(--c2);
  background: rgba(177,75,255,.08);
}

/* ---------- Boot loader ---------- */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  z-index: 10000;
  transition: opacity .6s var(--ease), visibility .6s;
}
.loader.hide {
  opacity: 0;
  visibility: hidden;
}
.loader-ring {
  width: 60px; height: 60px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,.08);
  border-top-color: var(--c1);
  border-right-color: var(--c2);
  animation: spin .9s linear infinite;
}
.loader-text {
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: .35em;
  font-size: .8rem;
  color: var(--muted);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: .35; } }

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: min(calc(100% - 28px), var(--maxw));
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-radius: 999px;
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  background: var(--panel);
  border: 1px solid var(--border);
  transition: padding .25s var(--ease), background .25s, box-shadow .3s;
}
.nav.scrolled {
  padding: 8px 18px;
  background: var(--panel-2);
  box-shadow: 0 10px 40px -10px rgba(0,0,0,.5);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
}
.logo-mark {
  width: 28px; height: 28px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  background: var(--grad);
  color: var(--bg);
  font-weight: 800;
  box-shadow: 0 0 18px rgba(0,229,255,.55);
}
.logo-text { letter-spacing: .04em; }

.nav-links {
  display: flex;
  gap: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .85rem;
}
.nav-links a {
  position: relative;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: var(--panel); }
.nav-links a.active {
  color: var(--text);
  background: var(--panel-2);
  box-shadow: inset 0 0 0 1px var(--border-2);
}

.theme-toggle {
  width: 38px; height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  transition: background .2s, transform .2s var(--ease);
}
.theme-toggle:hover { background: var(--panel-2); transform: rotate(15deg); }
.theme-toggle .sun  { display: none; }
.theme-toggle .moon { display: block; }
[data-theme="light"] .theme-toggle .sun  { display: block; }
[data-theme="light"] .theme-toggle .moon { display: none; }

@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* ---------- Generic sections ---------- */
main { display: block; }

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 110px 24px 40px;
  position: relative;
}

.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-no {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: 14px;
  letter-spacing: .12em;
}
.section-head h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -.01em;
}
.section-sub {
  color: var(--muted);
  margin: 0;
  font-size: 1rem;
}

.gradient {
  background: var(--grad);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  background-size: 200% 100%;
  animation: gradShift 8s ease-in-out infinite;
}
@keyframes gradShift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

.muted { color: var(--muted); }
.small { font-size: .85rem; }
.center { text-align: center; margin-top: 32px; }
.hl { color: var(--hl); }

/* ---------- Glass cards ---------- */
.glass {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  transition: transform .35s var(--ease), border-color .25s, box-shadow .35s;
  position: relative;
  overflow: hidden;
}
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity .35s var(--ease);
  pointer-events: none;
}
.glass:hover {
  transform: translateY(-4px);
  border-color: var(--border-2);
  box-shadow: var(--shadow-lg);
}
.glass:hover::before { opacity: 1; }

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 60px;
  position: relative;
}
.hero-inner {
  width: 100%;
  max-width: var(--maxw);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .78rem;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--border);
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 12px #4ade80;
  animation: pulse 1.4s ease-in-out infinite;
}

.hero-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.6rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 1;
  margin: 0;
  letter-spacing: -.02em;
}
.hero-title .line { display: block; }
.hero-title .line:first-child {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 14px;
  letter-spacing: .02em;
  font-family: 'JetBrains Mono', monospace;
}

/* Glitch jitter for the name */
.glitch {
  position: relative;
  display: inline-block;
}
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  background: var(--bg);
  overflow: hidden;
  background-clip: text;
  -webkit-background-clip: text;
}
.glitch::before {
  color: var(--c1);
  z-index: -1;
  animation: glitchA 4.4s infinite steps(2);
}
.glitch::after {
  color: var(--c3);
  z-index: -2;
  animation: glitchB 4.4s infinite steps(2);
}
@keyframes glitchA {
  0%, 92%, 100% { transform: translate(0,0); clip-path: inset(0 0 0 0); }
  93% { transform: translate(-2px,1px); clip-path: inset(20% 0 60% 0); }
  95% { transform: translate(2px,-1px); clip-path: inset(60% 0 10% 0); }
}
@keyframes glitchB {
  0%, 92%, 100% { transform: translate(0,0); clip-path: inset(0 0 0 0); }
  94% { transform: translate(3px,2px); clip-path: inset(40% 0 30% 0); }
  96% { transform: translate(-3px,-2px); clip-path: inset(10% 0 70% 0); }
}

.hero-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  color: var(--text);
  margin: 26px 0 18px;
  min-height: 1.6em;
}
.prompt { color: var(--c1); margin-right: 10px; }
.typewriter { color: var(--text); }
.caret {
  color: var(--c2);
  animation: blink 1s steps(1) infinite;
  margin-left: 2px;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-desc {
  color: var(--muted);
  max-width: 620px;
  margin: 10px auto 36px;
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 70px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: .02em;
  border: 1px solid var(--border-2);
  cursor: pointer;
  transition: transform .25s var(--ease), background .25s, box-shadow .35s, color .25s;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(255,255,255,.18), transparent 40%);
  opacity: 0;
  transition: opacity .25s;
}
.btn:hover::after { opacity: 1; }
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--grad);
  background-size: 200% 100%;
  color: #0a0a14;
  border-color: transparent;
  box-shadow: 0 14px 35px -10px rgba(0,229,255,.45), 0 8px 25px -10px rgba(177,75,255,.45);
  animation: gradShift 8s ease-in-out infinite;
}
.btn-primary:hover { box-shadow: 0 18px 45px -10px rgba(0,229,255,.55), 0 14px 35px -10px rgba(177,75,255,.6); }

.btn-ghost {
  background: var(--panel);
  color: var(--text);
}
.btn-ghost:hover { background: var(--panel-2); border-color: var(--c1); color: var(--c1); }

.hero-meta {
  display: flex;
  justify-content: center;
}
.scroll-hint {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  letter-spacing: .25em;
}
.scroll-hint span {
  width: 1px; height: 14px;
  background: var(--muted);
  opacity: .35;
  animation: scrollDot 1.6s ease-in-out infinite;
}
.scroll-hint span:nth-child(2) { animation-delay: .15s; }
.scroll-hint span:nth-child(3) { animation-delay: .3s; }
@keyframes scrollDot {
  0%, 100% { transform: scaleY(.6); opacity: .35; }
  50%      { transform: scaleY(1);   opacity: 1; }
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 36px;
  align-items: start;
}

.about-card {
  padding: 28px;
  text-align: center;
}
.about-card h3 {
  margin: 16px 0 4px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
}
.about-card .muted {
  font-family: 'JetBrains Mono', monospace;
  font-size: .82rem;
  margin: 0 0 18px;
}
.about-list {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: .92rem;
}
.about-list li { display: flex; gap: 10px; align-items: center; }
.about-list span { width: 22px; text-align: center; }

.avatar {
  position: relative;
  width: 132px;
  height: 132px;
  margin: 0 auto;
  border-radius: 50%;
  padding: 4px;
  background: var(--grad);
  background-size: 200% 100%;
  animation: gradShift 8s ease-in-out infinite;
}
.avatar img {
  width: 100%; height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-soft);
}
.avatar-ring {
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px dashed rgba(255,255,255,.25);
  animation: spin 18s linear infinite;
}

.about-text {
  font-size: 1.05rem;
  color: var(--muted);
}
.about-text p { margin: 0 0 16px; }
.about-text .hl { color: var(--text); font-weight: 600; }

.kpi-row {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.kpi {
  padding: 22px 12px;
  text-align: center;
}
.kpi .num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  background: var(--grad);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 100%;
  animation: gradShift 8s ease-in-out infinite;
}
.kpi .lbl {
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  color: var(--muted);
  letter-spacing: .12em;
  margin-top: 2px;
}

@media (max-width: 820px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ---------- SKILLS ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.skill {
  padding: 26px 26px 22px;
}
.skill h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.skill-ico {
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--grad-soft);
  border: 1px solid var(--border);
  font-size: 1.05rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  padding: 6px 12px;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .78rem;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  transition: background .2s, color .2s, transform .2s var(--ease), border-color .2s;
}
.chip:hover {
  background: var(--grad);
  background-size: 200% 100%;
  color: #0a0a14;
  border-color: transparent;
  transform: translateY(-2px);
}
.chip-row.small .chip { font-size: .72rem; padding: 4px 10px; }

@media (max-width: 720px) {
  .skills-grid { grid-template-columns: 1fr; }
}

/* ---------- PROJECTS ---------- */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.proj {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  color: var(--text);
}
.proj-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
}
.proj-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--border);
}
.proj h3 {
  font-family: 'Space Grotesk', sans-serif;
  margin: 4px 0 0;
  font-size: 1.25rem;
  transition: color .25s;
}
.proj:hover h3 { color: var(--c1); }
.proj p {
  color: var(--muted);
  margin: 0;
  font-size: .95rem;
}
.proj-foot {
  margin-top: auto;
  display: flex;
  gap: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .78rem;
  color: var(--muted);
  padding-top: 8px;
}

@media (max-width: 720px) {
  .proj-grid { grid-template-columns: 1fr; }
}

/* ---------- STATS ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.stat-card {
  padding: 18px;
  display: grid;
  place-items: center;
}
.stat-card img {
  width: 100%;
  height: auto;
}
.stat-card.full { grid-column: 1 / -1; }

@media (max-width: 720px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat-card.full { grid-column: auto; }
}

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.contact {
  padding: 22px 26px;
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--text);
  transform-style: preserve-3d;
}
.contact svg {
  flex-shrink: 0;
  color: var(--c1);
  transition: color .25s, transform .25s var(--ease);
}
.contact:hover svg { color: var(--c2); transform: scale(1.1); }
.contact h4 {
  margin: 0;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
}
.contact p {
  margin: 2px 0 0;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: .82rem;
}

@media (max-width: 720px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ---------- FOOTER ---------- */
.footer {
  padding: 60px 24px 50px;
  text-align: center;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  border-top: 1px solid var(--border);
  padding-top: 36px;
}
.footer p {
  font-family: 'JetBrains Mono', monospace;
  font-size: .9rem;
  margin: 0 0 6px;
  color: var(--text);
}
.footer .muted { font-size: .8rem; }

/* ---------- Back-to-top button ---------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--grad);
  color: var(--bg);
  border: none;
  cursor: pointer;
  z-index: 90;
  box-shadow: 0 12px 30px -8px rgba(0,229,255,.5);
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: transform .35s var(--ease), opacity .25s;
}
.to-top.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.to-top:hover { transform: translateY(-4px) scale(1.05); }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger the card reveal */
.skills-grid .reveal:nth-child(1) { transition-delay: 0s; }
.skills-grid .reveal:nth-child(2) { transition-delay: .08s; }
.skills-grid .reveal:nth-child(3) { transition-delay: .16s; }
.skills-grid .reveal:nth-child(4) { transition-delay: .24s; }

.proj-grid .reveal:nth-child(1) { transition-delay: 0s; }
.proj-grid .reveal:nth-child(2) { transition-delay: .08s; }
.proj-grid .reveal:nth-child(3) { transition-delay: .16s; }
.proj-grid .reveal:nth-child(4) { transition-delay: .24s; }

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* =========================================================
 * Blog · Latest preview cards (homepage)
 * ======================================================= */
.latest-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.latest-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  color: var(--text);
  position: relative;
  min-height: 220px;
}
.latest-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  margin: 4px 0 0;
  transition: color .25s;
  line-height: 1.35;
}
.latest-card:hover h3 { color: var(--c1); }
.latest-card p {
  color: var(--muted);
  font-size: .92rem;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.latest-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .75rem;
  color: var(--muted);
}
.latest-arrow {
  position: absolute;
  right: 22px;
  bottom: 22px;
  font-size: 1.2rem;
  color: var(--c1);
  opacity: .6;
  transition: transform .25s var(--ease), opacity .25s;
}
.latest-card:hover .latest-arrow { transform: translateX(4px); opacity: 1; }

.latest-skeleton {
  min-height: 220px;
  background:
    linear-gradient(110deg, var(--panel) 30%, var(--panel-2) 50%, var(--panel) 70%) var(--panel);
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (max-width: 980px) { .latest-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .latest-grid { grid-template-columns: 1fr; } }

/* =========================================================
 * Blog · Listing page
 * ======================================================= */
.blog-head-section { padding-top: 130px; }

.blog-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin: 0 0 32px;
}
.search-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  flex: 1;
  min-width: 220px;
  max-width: 360px;
}
.search-wrap svg { color: var(--muted); flex-shrink: 0; }
.search-wrap input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: .92rem;
  width: 100%;
}
.search-wrap input::placeholder { color: var(--muted); }

.tag-filter {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.chip.tag {
  cursor: pointer;
  border: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
}
.chip.tag.active {
  background: var(--grad);
  background-size: 200% 100%;
  color: #0a0a14;
  border-color: transparent;
}

.blog-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  max-width: 880px;
  margin: 0 auto;
}
.blog-card {
  padding: 26px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--text);
}
.blog-card h2 {
  font-family: 'Space Grotesk', sans-serif;
  margin: 4px 0 0;
  font-size: 1.45rem;
  line-height: 1.3;
  transition: color .25s;
}
.blog-card:hover h2 { color: var(--c1); }
.blog-card p { margin: 0; color: var(--muted); }
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .78rem;
  color: var(--muted);
}
.blog-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  color: var(--c1);
  font-family: 'JetBrains Mono', monospace;
  font-size: .82rem;
  opacity: .85;
  transition: opacity .2s, transform .25s var(--ease);
}
.blog-card:hover .blog-card-cta { opacity: 1; transform: translateX(4px); }

.blog-skeleton {
  min-height: 150px;
  background:
    linear-gradient(110deg, var(--panel) 30%, var(--panel-2) 50%, var(--panel) 70%) var(--panel);
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
}

.dot-sep { opacity: .5; }
.ulink {
  color: var(--c1);
  border-bottom: 1px dashed rgba(0,229,255,.4);
  transition: color .2s, border-color .2s;
}
.ulink:hover { color: var(--c2); border-color: var(--c2); }

/* =========================================================
 * Blog · Single post (prose)
 * ======================================================= */
.reading-bar {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  background: var(--grad);
  background-size: 200% 100%;
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 200;
  pointer-events: none;
  animation: gradShift 8s ease-in-out infinite;
}

.post-section {
  max-width: 760px;
  margin: 0 auto;
  padding-top: 130px;
}
.post-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .82rem;
  color: var(--muted);
  transition: color .2s, transform .25s var(--ease);
}
.post-back:hover { color: var(--c1); transform: translateX(-3px); }

.post-header { margin-bottom: 40px; }
.post-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: 12px;
}
.post-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -.01em;
  margin: 0 0 14px;
  font-weight: 700;
}
.post-excerpt {
  font-size: 1.1rem;
  margin: 0 0 20px;
  line-height: 1.6;
}

.post-error {
  padding: 32px;
  text-align: center;
}
.post-error h3 {
  font-family: 'Space Grotesk', sans-serif;
  margin: 0 0 10px;
}
.post-error code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--panel-2);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: .85em;
}

.post-footer {
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.post-nav-link {
  padding: 18px 22px;
  border-radius: var(--radius-sm);
  background: var(--panel);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color .2s, transform .25s var(--ease), background .2s;
}
.post-nav-link:hover {
  border-color: var(--c1);
  transform: translateY(-2px);
  background: var(--panel-2);
}
.post-nav-link.right { text-align: right; }
.post-nav-link strong {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  color: var(--text);
}

@media (max-width: 640px) {
  .post-nav { grid-template-columns: 1fr; }
  .post-nav-link.right { text-align: left; }
}

/* ---------- Prose (rendered markdown) ---------- */
.prose {
  font-size: 1.05rem;
  line-height: 1.78;
  color: var(--text);
}
.prose > * + * { margin-top: 1.2em; }
.prose h1, .prose h2, .prose h3, .prose h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.25;
  margin-top: 2em;
  position: relative;
}
.prose h1 { font-size: 2rem; }
.prose h2 { font-size: 1.55rem; padding-bottom: .35em; border-bottom: 1px solid var(--border); }
.prose h3 { font-size: 1.22rem; color: var(--text); }
.prose h4 { font-size: 1.05rem; color: var(--muted); }

.prose p { color: var(--text); }
.prose strong { color: var(--hl); }
.prose em { color: var(--c1); font-style: italic; }
.prose a {
  color: var(--c1);
  border-bottom: 1px dashed rgba(0,229,255,.4);
  transition: color .2s, border-color .2s;
}
.prose a:hover { color: var(--c2); border-color: var(--c2); }

.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: .3em 0; }
.prose li::marker { color: var(--c1); }
.prose ul li input[type="checkbox"] { margin-right: .4em; accent-color: var(--c1); }

.prose blockquote {
  border-left: 3px solid var(--c2);
  padding: 4px 18px;
  margin: 1.4em 0;
  color: var(--muted);
  font-style: italic;
  background: var(--panel);
  border-radius: 4px;
}
.prose blockquote p { margin: .35em 0; }

.prose code {
  font-family: 'JetBrains Mono', monospace;
  font-size: .9em;
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--c1);
}
.prose pre {
  position: relative;
  background: rgba(8, 10, 22, .92);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 18px 18px 20px;
  overflow-x: auto;
  font-size: .9rem;
  line-height: 1.6;
  margin: 1.4em 0;
}
.prose pre code {
  background: transparent;
  border: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}
.code-copy {
  position: absolute;
  top: 8px; right: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem;
  padding: 4px 9px;
  border-radius: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  opacity: 0;
  transition: opacity .2s, color .2s, background .2s;
}
.prose pre:hover .code-copy { opacity: 1; }
.code-copy:hover { color: var(--c1); background: var(--panel); }

.prose hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-2), transparent);
  margin: 2.4em 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: .95rem;
  margin: 1.4em 0;
}
.prose th, .prose td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.prose th {
  background: var(--panel-2);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
}
.prose tr:nth-child(even) td { background: rgba(255, 255, 255, .02); }

.prose img {
  max-width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin: 1.4em auto;
}

.prose kbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: .82em;
  padding: 1px 6px;
  border: 1px solid var(--border-2);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--panel-2);
  color: var(--text);
}

.heading-anchor {
  display: inline-block;
  margin-left: 8px;
  color: var(--c1);
  opacity: 0;
  text-decoration: none;
  font-weight: 400;
  border: none;
  transition: opacity .2s;
}
.prose h1:hover .heading-anchor,
.prose h2:hover .heading-anchor,
.prose h3:hover .heading-anchor,
.prose h4:hover .heading-anchor { opacity: 1; }

/* =========================================================
 * Guestbook · Giscus wrapper
 * ======================================================= */
.giscus-wrap {
  padding: 26px 30px;
  margin-top: 8px;
}
.giscus-wrap .giscus,
.giscus-wrap .giscus-frame {
  width: 100% !important;
  min-height: 320px;
}
.comments-section { padding-top: 50px; }

/* =========================================================
 * Theme · light tweaks for new components
 * ======================================================= */
[data-theme="light"] .prose pre {
  background: #14182c;
  color: #e6ebf2;
}
[data-theme="light"] .prose code {
  background: rgba(15, 23, 42, .06);
  color: #6f3ad6;
}
[data-theme="light"] .prose tr:nth-child(even) td { background: rgba(15, 23, 42, .03); }
[data-theme="light"] .latest-skeleton,
[data-theme="light"] .blog-skeleton {
  background:
    linear-gradient(110deg, var(--panel) 30%, rgba(15,23,42,.04) 50%, var(--panel) 70%) var(--panel);
}