/* ═══════════════════════════════════════════════
   Md Abu Salehin — Portfolio CSS
   Aesthetic: Premium Dark-First, Sleek, Minimal
   Fonts: Syne (display) + DM Sans (body) + DM Mono
   ═══════════════════════════════════════════════ */

/* ── Variables ── */
:root {
  /* Dark theme (default) */
  --bg:          #0a0a0f;
  --bg-1:        #111118;
  --bg-2:        #16161f;
  --bg-3:        #1e1e2a;
  --surface:     rgba(255,255,255,0.04);
  --surface-h:   rgba(255,255,255,0.08);
  --border:      rgba(255,255,255,0.08);
  --border-h:    rgba(255,255,255,0.18);

  --text:        #f0f0f5;
  --text-2:      #a0a0b8;
  --text-3:      #606078;

  --accent:      #7c6af7;        /* Purple-indigo */
  --accent-2:    #a78bfa;
  --accent-ai:   #34d399;        /* Emerald — AI colour */
  --accent-ai-2: #6ee7b7;
  --accent-glow: rgba(124,106,247,0.25);
  --accent-ai-glow: rgba(52,211,153,0.2);

  --gradient:    linear-gradient(135deg, #7c6af7 0%, #a78bfa 100%);
  --gradient-ai: linear-gradient(135deg, #34d399 0%, #6ee7b7 100%);

  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   32px;

  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

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

  --nav-h: 68px;
}

[data-theme="light"] {
  --bg:          #f5f5f8;
  --bg-1:        #ffffff;
  --bg-2:        #f0f0f6;
  --bg-3:        #e8e8f0;
  --surface:     rgba(0,0,0,0.04);
  --surface-h:   rgba(0,0,0,0.07);
  --border:      rgba(0,0,0,0.09);
  --border-h:    rgba(0,0,0,0.2);

  --text:        #0d0d1a;
  --text-2:      #4a4a6a;
  --text-3:      #8888a8;

  --accent:      #5b4de0;
  --accent-2:    #7c6af7;
  --accent-ai:   #059669;
  --accent-ai-2: #34d399;
  --accent-glow: rgba(91,77,224,0.15);
  --accent-ai-glow: rgba(5,150,105,0.12);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── Noise overlay ── */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 200px;
}
[data-theme="light"] .noise-overlay { opacity: 0.015; }

/* ── Custom Cursor ── */
.cursor {
  position: fixed;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s, background 0.2s;
  mix-blend-mode: normal;
}

.cursor-trail {
  position: fixed;
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9997;
  transform: translate(-50%, -50%);
  opacity: 0.4;
  transition: all 0.12s var(--ease);
}

body:not(.cursor-active) .cursor,
body:not(.cursor-active) .cursor-trail { opacity: 0; }

/* ── Loading Screen ── */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}

.loading-screen.done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.loader-logo {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 4px;
}

.ll-bracket { color: var(--accent); }
.ll-name    { color: var(--text); letter-spacing: -0.02em; }

.loader-progress {
  width: 180px;
  height: 2px;
  background: var(--border);
  border-radius: 1px;
  overflow: hidden;
}

.loader-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient);
  border-radius: 1px;
  transition: width 0.05s linear;
}

.loader-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  letter-spacing: 0.1em;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  transition: background 0.3s, box-shadow 0.3s, transform 0.4s var(--ease);
}

.nav.scrolled {
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(24px) saturate(1.5);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  box-shadow: 0 1px 0 var(--border);
}

[data-theme="light"] .nav.scrolled {
  background: rgba(245,245,248,0.88);
}

.nav.hidden { transform: translateY(-100%); }

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* Logo */
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
  transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 0.75; }
.nl-bracket { color: var(--accent); }
.nl-name    { color: var(--text); }

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nl {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.01em;
  transition: color 0.2s;
  position: relative;
}

.nl::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s var(--ease);
}

.nl:hover { color: var(--text); }
.nl:hover::after,
.nl.active::after { width: 100%; }
.nl.active { color: var(--text); }

/* Nav right */
.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

/* Theme Button */
.theme-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
}

.theme-btn-track {
  width: 48px;
  height: 26px;
  background: var(--bg-3);
  border: 1px solid var(--border-h);
  border-radius: 13px;
  display: flex;
  align-items: center;
  padding: 2px;
  transition: background 0.3s;
  position: relative;
}

.theme-btn-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(0);
  transition: transform 0.35s var(--ease-spring), background 0.3s;
  position: relative;
}

[data-theme="light"] .theme-btn-thumb { transform: translateX(22px); }

.moon-ic, .sun-ic {
  position: absolute;
  font-size: 0.6rem;
  color: white;
  transition: opacity 0.3s;
}
.sun-ic { opacity: 0; }
[data-theme="light"] .moon-ic { opacity: 0; }
[data-theme="light"] .sun-ic  { opacity: 1; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }

/* ── Mobile Menu ── */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease), visibility 0.35s;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mm-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}

.mm-link {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-2);
  transition: color 0.2s;
}
.mm-link:hover { color: var(--text); }

/* ── Section Base ── */
.section {
  padding: 7rem 0;
}

.section-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.sec-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.sec-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 3.5rem;
}

/* ── AOS (scroll reveal) ── */
[data-aos] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-aos].aos-in {
  opacity: 1;
  transform: none;
}

[data-aos][data-aos-delay="50"]  { transition-delay: 0.05s; }
[data-aos][data-aos-delay="100"] { transition-delay: 0.1s; }
[data-aos][data-aos-delay="150"] { transition-delay: 0.15s; }
[data-aos][data-aos-delay="200"] { transition-delay: 0.2s; }
[data-aos][data-aos-delay="250"] { transition-delay: 0.25s; }
[data-aos][data-aos-delay="300"] { transition-delay: 0.3s; }
[data-aos][data-aos-delay="350"] { transition-delay: 0.35s; }
[data-aos][data-aos-delay="400"] { transition-delay: 0.4s; }
[data-aos][data-aos-delay="500"] { transition-delay: 0.5s; }

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 1.75rem;
  background: var(--gradient);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: transform 0.25s var(--ease-spring), box-shadow 0.25s var(--ease);
  white-space: nowrap;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 1.75rem;
  background: var(--surface);
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: background 0.2s, border-color 0.2s, transform 0.25s var(--ease-spring);
}
.btn-ghost:hover {
  background: var(--surface-h);
  border-color: var(--border-h);
  transform: translateY(-2px);
}
.btn-ghost--center {
  margin: 0 auto;
}

/* ══════════════════════════════
   HERO
══════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-h);
}

/* Ambient glows */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(90px);
}
.glow-1 {
  width: 600px; height: 600px;
  top: -100px; left: -150px;
  background: radial-gradient(circle, rgba(124,106,247,0.18) 0%, transparent 70%);
}
.glow-2 {
  width: 500px; height: 500px;
  bottom: 50px; right: -100px;
  background: radial-gradient(circle, rgba(52,211,153,0.12) 0%, transparent 70%);
}

/* Dot grid */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--text-3) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.15;
  pointer-events: none;
}
[data-theme="light"] .hero-grid { opacity: 0.1; }

.hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
  min-height: calc(100vh - var(--nav-h));
  padding-top: 3rem;
  padding-bottom: 5rem;
}

/* ── Hero Text ── */
.hero-text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-2);
  width: fit-content;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-ai);
  animation: dotPulse 2s infinite;
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-ai-glow); }
  50%       { box-shadow: 0 0 0 6px transparent; }
}

.hero-heading {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6.5vw, 5.5rem);
  font-weight: 800;
  line-height: 0.97;
  letter-spacing: -0.04em;
  color: var(--text);
  display: flex;
  flex-direction: column;
}

.hh-line { display: block; }

.hh-ai {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hh-cursor {
  display: inline-block;
  -webkit-text-fill-color: var(--accent);
  animation: cursorBlink 1.1s step-end infinite;
  margin-left: 4px;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.hero-sub {
  font-size: 1.0625rem;
  color: var(--text-2);
  line-height: 1.65;
  max-width: 520px;
}
.hero-sub em { font-style: normal; color: var(--text); font-weight: 500; }

/* Tech stack pills */
.hero-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hs-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.3rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-2);
}

.hs-tag--ai {
  background: rgba(52,211,153,0.08);
  border-color: rgba(52,211,153,0.25);
  color: var(--accent-ai);
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-socials {
  display: flex;
  gap: 1.5rem;
}

.hs-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-3);
  transition: color 0.2s;
}
.hs-link:hover { color: var(--text); }
.hs-link i { font-size: 1rem; }

/* ── Hero Right ── */
.hero-right {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
}

/* Photo */
.hero-photo-wrap {
  position: relative;
  width: 280px;
  height: 280px;
  flex-shrink: 0;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  position: relative;
  z-index: 3;
  border: 2px solid var(--border-h);
}

.photo-ring {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: var(--gradient) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  animation: ringRotate 8s linear infinite;
  z-index: 2;
}

.photo-ring--2 {
  inset: -18px;
  border-color: rgba(52,211,153,0.3);
  background: none;
  -webkit-mask: none;
  mask: none;
  border: 1px dashed rgba(52,211,153,0.25);
  animation: ringRotate 15s linear infinite reverse;
}

@keyframes ringRotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.photo-glow {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  z-index: 1;
  animation: glowPulse 3s ease-in-out infinite alternate;
}

@keyframes glowPulse {
  from { opacity: 0.6; transform: scale(0.95); }
  to   { opacity: 1;   transform: scale(1.05); }
}

/* Terminal */
.hero-terminal {
  width: 100%;
  max-width: 380px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,0.35);
}

[data-theme="light"] .hero-terminal {
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.term-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-3);
  border-bottom: 1px solid var(--border);
}

.term-dots { display: flex; gap: 6px; }
.td {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.td--red    { background: #ff5f57; }
.td--yellow { background: #ffbd2e; }
.td--green  { background: #28c940; }

.term-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
}

.term-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: #e0e0f0;
  overflow-x: auto;
}

[data-theme="light"] .term-body { color: #1a1a2e; }

.term-body code { font-family: inherit; }

.tk-kw   { color: #c678dd; }
.tk-cls  { color: #e5c07b; }
.tk-str  { color: #98c379; }
.tk-prop { color: #61afef; }
.tk-ai   { color: var(--accent-ai); }

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.scroll-hint:hover { color: var(--text-2); }

.sh-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--text-3));
  animation: lineGrow 2s ease-in-out infinite;
}

@keyframes lineGrow {
  0%, 100% { transform: scaleY(0.5); opacity: 0.5; }
  50%       { transform: scaleY(1);   opacity: 1; }
}

/* ══════════════════════════════
   ABOUT
══════════════════════════════ */
.about {
  background: var(--bg-1);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 5rem;
  align-items: start;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.at-lead {
  font-family: var(--font-display);
  font-size: 1.3125rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
}
.at-lead strong {
  color: var(--accent-2);
  font-weight: 700;
}

.about-text p {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.75;
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.ad-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.ad-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.ad-key {
  font-weight: 600;
  color: var(--text-3);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}
.ad-val { color: var(--text-2); text-align: right; }

.ad-available {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-ai) !important;
  font-weight: 600;
}
.avail-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-ai);
  animation: dotPulse 2s infinite;
}

/* Stats */
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s var(--ease-spring);
}
.stat-card:hover {
  border-color: var(--border-h);
  transform: translateY(-3px);
}

.stat-card--wide {
  grid-column: span 2;
}

.sc-num {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.04em;
  margin-bottom: 0.25rem;
}

.sc-label {
  font-size: 0.8125rem;
  color: var(--text-3);
  font-weight: 500;
}

.sc-icon {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 34px;
  height: 34px;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.9rem;
}

/* ══════════════════════════════
   SKILLS
══════════════════════════════ */
.skills { background: var(--bg); }

.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.skill-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color 0.25s, transform 0.25s var(--ease-spring);
}

.skill-block:hover {
  border-color: var(--border-h);
  transform: translateY(-3px);
}

.skill-block--featured {
  border-color: rgba(124,106,247,0.25);
  background: rgba(124,106,247,0.04);
  position: relative;
  overflow: hidden;
}

.skill-block--featured::before {
  content: '★ Primary';
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
}

.sb-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.sb-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--surface-h);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  font-size: 1.125rem;
  flex-shrink: 0;
}

.sb-icon--ai {
  background: rgba(52,211,153,0.12);
  color: var(--accent-ai);
}

.sb-icon--django {
  background: rgba(124,106,247,0.12);
  color: var(--accent);
}

.sb-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.125rem;
}

.sb-sub {
  font-size: 0.8rem;
  color: var(--text-3);
}

.sb-skills {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.skill-row {}

.sr-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.sr-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.sr-level {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
}

.sr-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.sr-fill {
  height: 100%;
  width: 0;
  background: var(--gradient);
  border-radius: 2px;
  transition: width 1.2s var(--ease);
  position: relative;
}

.sr-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  animation: shimmer 2.5s infinite;
}

@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.sr-fill--dim { background: linear-gradient(135deg, #4a4a6a 0%, #6a6a8a 100%); }

/* ══════════════════════════════
   WORK
══════════════════════════════ */
.work { background: var(--bg-1); }

/* Featured Project */
.project-featured {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 3.5rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 3rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s;
}

.project-featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  right: 0; height: 2px;
  background: var(--gradient);
}

.project-featured:hover { border-color: var(--border-h); }

.pf-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.pf-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.625rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-2);
}

.pf-tag--live {
  background: rgba(52,211,153,0.1);
  border-color: rgba(52,211,153,0.3);
  color: var(--accent-ai);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.live-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-ai);
  animation: dotPulse 2s infinite;
}

.pf-year {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  margin-left: auto;
}

.pf-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.pf-desc {
  font-size: 0.9688rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.pf-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.pff-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.875rem;
  color: var(--text-2);
}

.pff-item i {
  color: var(--accent);
  width: 16px;
  flex-shrink: 0;
}

.pf-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.pf-tech span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.625rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-3);
}

.pf-links { display: flex; gap: 1rem; }

.pfl-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 1.5rem;
  background: var(--gradient);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  transition: transform 0.2s var(--ease-spring), box-shadow 0.2s;
}
.pfl-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

/* Browser mockup */
.pf-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.pf-browser {
  width: 100%;
  background: #0d0d14;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,0.5);
  aspect-ratio: 4/3;
  display: flex;
  flex-direction: column;
}

[data-theme="light"] .pf-browser {
  background: #1a1a2e;
}

.pb-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.875rem;
  background: #161620;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  flex-shrink: 0;
}

.pb-dots { display: flex; gap: 5px; }
.pb-dots span {
  width: 9px; height: 9px;
  border-radius: 50%;
}
.pb-dots span:nth-child(1) { background: #ff5f57; }
.pb-dots span:nth-child(2) { background: #ffbd2e; }
.pb-dots span:nth-child(3) { background: #28c940; }

.pb-url {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.06);
  padding: 0.2rem 0.625rem;
  border-radius: 4px;
  flex: 1;
}

.pb-screen {
  flex: 1;
  overflow: hidden;
  background: linear-gradient(160deg, #0e0e1a 0%, #13131f 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pbs-content {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  gap: 1rem;
}

.pbs-hero {
  background: linear-gradient(135deg, #0f0f1a 0%, #16161f 100%);
  border: 1px solid rgba(184,144,46,0.2);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.4rem;
}

.pbs-h-badge {
  font-size: 0.5rem;
  color: #b8902e;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.pbs-h-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: #f0ede8;
  line-height: 1.2;
}

.pbs-h-sub {
  font-size: 0.55rem;
  color: rgba(240,237,232,0.5);
}

.pbs-h-btn {
  font-size: 0.55rem;
  background: #b8902e;
  color: #0a0a0f;
  padding: 0.25rem 0.5rem;
  border-radius: 3px;
  width: fit-content;
  font-weight: 600;
  margin-top: 0.25rem;
}

.pbs-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.pbs-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 6px;
  padding: 0.5rem;
  text-align: center;
}

.pbs-ci { font-size: 0.9rem; }
.pbs-ct {
  font-size: 0.45rem;
  color: rgba(255,255,255,0.5);
  margin-top: 0.25rem;
}

/* Secondary projects */
.projects-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.project-card-s {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  transition: border-color 0.25s, transform 0.25s var(--ease-spring);
}
.project-card-s:hover {
  border-color: var(--border-h);
  transform: translateY(-3px);
}

.pcs-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pcs-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--surface-h);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  font-size: 1rem;
}

.pcs-icon--ai {
  background: rgba(52,211,153,0.12);
  color: var(--accent-ai);
}

.pcs-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pcs-type {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
}

.pcs-year {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
}

.pcs-title {
  font-family: var(--font-display);
  font-size: 1.3125rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.pcs-desc {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.65;
  flex: 1;
}

.pcs-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.pcs-tech span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-3);
}

.pcs-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent-2);
  transition: color 0.2s;
}
.pcs-link:hover { color: var(--text); }

.pcs-links-row {
  display: flex;
  gap: 1.25rem;
}

.work-footer {
  display: flex;
  justify-content: center;
}

/* ══════════════════════════════
   CONTACT
══════════════════════════════ */
.contact { background: var(--bg); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-text {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.ct-lead {
  font-size: 1.125rem;
  color: var(--text-2);
  line-height: 1.7;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cm-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s, transform 0.25s var(--ease-spring);
}
.cm-item:hover {
  border-color: var(--border-h);
  transform: translateY(-2px);
}

.cm-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1rem;
  flex-shrink: 0;
}

.cm-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 2px;
}

.cm-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.cm-val {
  font-size: 0.9375rem;
  color: var(--text);
  font-weight: 500;
}

.cm-arrow {
  color: var(--text-3);
  font-size: 0.875rem;
  transition: transform 0.2s, color 0.2s;
}
.cm-item:hover .cm-arrow {
  transform: translateX(3px);
  color: var(--text);
}

/* CTA Card */
.cta-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-ai);
}

.cc-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-ai);
  background: rgba(52,211,153,0.08);
  border: 1px solid rgba(52,211,153,0.2);
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  width: fit-content;
}

.cc-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
}

.cc-text {
  font-size: 0.9688rem;
  color: var(--text-2);
  line-height: 1.65;
}

/* ══════════════════════════════
   FOOTER
══════════════════════════════ */
.footer {
  background: var(--bg-1);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.ft-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
}

.ft-links {
  display: flex;
  gap: 2rem;
}
.ft-links a {
  font-size: 0.875rem;
  color: var(--text-3);
  transition: color 0.2s;
}
.ft-links a:hover { color: var(--text); }

.ft-social {
  display: flex;
  gap: 0.875rem;
}
.ft-social a {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  font-size: 0.9rem;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.ft-social a:hover {
  color: var(--text);
  border-color: var(--border-h);
  background: var(--surface);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--text-3);
}

.fb-right a {
  color: var(--text-3);
  transition: color 0.2s;
}
.fb-right a:hover { color: var(--accent); }

/* ══════════════════════════════
   SCROLLBAR
══════════════════════════════ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ══════════════════════════════
   SELECTION
══════════════════════════════ */
::selection { background: var(--accent); color: #fff; }

/* ══════════════════════════════
   FOCUS
══════════════════════════════ */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ══════════════════════════════
   RESPONSIVE
══════════════════════════════ */
@media (max-width: 1100px) {
  .hero-inner { gap: 3rem; }
  .project-featured { gap: 2.5rem; padding: 2.5rem; }
  .about-grid { gap: 3.5rem; }
}

@media (max-width: 900px) {
  /* Nav */
  .nav-links { display: none; }
  .hamburger { display: flex; }

  /* Hero */
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 2rem;
    padding-bottom: 6rem;
    gap: 3rem;
  }
  .hero-badge, .hero-stack, .hero-cta, .hero-socials { justify-content: center; }
  .hero-sub { margin: 0 auto; }
  .hero-right { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .hero-terminal { max-width: 340px; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-stats { position: static; grid-template-columns: repeat(2, 1fr); }

  /* Skills */
  .skills-grid { grid-template-columns: 1fr; }

  /* Work */
  .project-featured {
    grid-template-columns: 1fr;
    padding: 2rem;
    gap: 2rem;
  }

  .pf-features { grid-template-columns: 1fr; }

  .projects-secondary { grid-template-columns: 1fr; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 640px) {
  .section { padding: 5rem 0; }
  .section-inner { padding: 0 1.25rem; }
  .hero-inner { padding: 1.5rem 1.25rem 5rem; }

  .hero-heading { font-size: clamp(2.4rem, 9vw, 3.5rem); }
  .hero-photo-wrap { width: 220px; height: 220px; }
  .hero-right { flex-direction: column; }

  .about-stats { grid-template-columns: 1fr 1fr; }
  .stat-card--wide { grid-column: span 2; }

  .pf-tech, .pf-features { gap: 0.5rem; }
  .footer-top { flex-direction: column; align-items: flex-start; }
  .ft-links { flex-wrap: wrap; gap: 1rem; }

  .nav-inner { padding: 0 1.25rem; }
  .footer-inner { padding: 0 1.25rem; }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .cursor, .cursor-trail { display: none; }
  [data-aos] { opacity: 1; transform: none; }
}

/* ── Print ── */
@media print {
  .nav, .loading-screen, .cursor, .cursor-trail,
  .noise-overlay, .scroll-hint, .hamburger { display: none !important; }
  .hero { min-height: auto; }
  .section { padding: 2rem 0; }
}