:root {
  --bg: #f4f6fb;
  --bg-elevated: rgba(255, 255, 255, 0.72);
  --bg-solid: #ffffff;
  --text: #0c1222;
  --text-muted: #5c6578;
  --accent: #3b5bfd;
  --accent-2: #7c3aed;
  --ring: rgba(59, 91, 253, 0.35);
  --glass-border: rgba(255, 255, 255, 0.55);
  --shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.12);
  --radius: 18px;
  --radius-sm: 12px;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Outfit", var(--font-sans);
  --progress-track: rgba(12, 18, 34, 0.08);
  --tilt-max: 12deg;
}

[data-theme="dark"] {
  --bg: #070b14;
  --bg-elevated: rgba(20, 26, 42, 0.65);
  --bg-solid: #101624;
  --text: #e8ecf4;
  --text-muted: #9aa3b5;
  --accent: #6b8aff;
  --accent-2: #a78bfa;
  --ring: rgba(107, 138, 255, 0.4);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45);
  --progress-track: rgba(255, 255, 255, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.35s ease, color 0.25s ease;
}

.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(59, 91, 253, 0.18), transparent 55%),
    radial-gradient(700px 450px at 90% 10%, rgba(124, 58, 237, 0.15), transparent 50%),
    radial-gradient(600px 400px at 50% 100%, rgba(59, 91, 253, 0.08), transparent 45%);
  animation: meshPulse 18s ease-in-out infinite alternate;
}

@keyframes meshPulse {
  0% { filter: hue-rotate(0deg) saturate(1); opacity: 1; }
  100% { filter: hue-rotate(25deg) saturate(1.15); opacity: 0.95; }
}

[data-theme="dark"] .bg-mesh {
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(59, 91, 253, 0.25), transparent 55%),
    radial-gradient(700px 450px at 90% 10%, rgba(124, 58, 237, 0.2), transparent 50%),
    radial-gradient(600px 400px at 50% 100%, rgba(99, 102, 241, 0.12), transparent 45%);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  z-index: 1000;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.08s linear;
  box-shadow: 0 0 20px var(--ring);
}

.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 950;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
  background: var(--bg-elevated);
  backdrop-filter: blur(12px);
  color: var(--text);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.92);
  transition: opacity 0.35s ease, visibility 0.35s ease, transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  box-shadow: 0 12px 36px var(--ring);
  border-color: rgba(59, 91, 253, 0.35);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  z-index: 2000;
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  left: 0.5rem;
}

header {
  position: sticky;
  top: 0;
  z-index: 900;
  padding: 0.85rem clamp(1rem, 4vw, 2.5rem);
  background: var(--bg-elevated);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  transition: background 0.35s ease, border-color 0.35s ease;
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
}

nav.primary-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

nav.primary-nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.92rem;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  transition: color 0.25s ease, background 0.25s ease, transform 0.2s ease;
}

nav.primary-nav a:hover {
  color: var(--text);
  background: rgba(59, 91, 253, 0.1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: var(--bg-elevated);
  color: var(--text);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px var(--ring);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  background: var(--bg-elevated);
  cursor: pointer;
  padding: 0 11px;
}

.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-drawer {
  display: none;
  position: fixed;
  inset: 0;
  top: 72px;
  background: rgba(7, 11, 20, 0.45);
  backdrop-filter: blur(4px);
  z-index: 850;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.mobile-drawer-inner {
  background: var(--bg-solid);
  padding: 1.25rem;
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transform: translateY(-12px);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.mobile-drawer.open .mobile-drawer-inner {
  transform: translateY(0);
}

.mobile-drawer a {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease;
}

.mobile-drawer a:hover,
.mobile-drawer a:active {
  background: rgba(59, 91, 253, 0.12);
}

@media (max-width: 880px) {
  nav.primary-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-drawer {
    display: block;
  }
}

section {
  padding: clamp(3rem, 8vw, 5.5rem) clamp(1.25rem, 4vw, 2.5rem);
  max-width: 1120px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1.75rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 48px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

/* Hero */
.hero {
  position: relative;
  text-align: center;
  padding-top: clamp(4rem, 12vw, 7rem);
  padding-bottom: clamp(3rem, 8vw, 5rem);
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-aurora {
  position: absolute;
  inset: -40% -20%;
  z-index: 0;
  pointer-events: none;
  background:
    conic-gradient(from 180deg at 50% 50%, rgba(59, 91, 253, 0.15), rgba(124, 58, 237, 0.12), rgba(34, 211, 238, 0.1), rgba(59, 91, 253, 0.15));
  animation: auroraRotate 22s linear infinite;
  opacity: 0.85;
}

@keyframes auroraRotate {
  to { transform: rotate(360deg); }
}

.hero-noise {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hero > *:not(.hero-aurora):not(.hero-noise) {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(59, 91, 253, 0.12);
  border: 1px solid rgba(59, 91, 253, 0.2);
  margin-bottom: 1.5rem;
  animation: fadeUp 0.8s ease 0.1s both;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.15;
  margin-bottom: 1rem;
  animation: fadeUp 0.8s ease 0.2s both;
}

.hero-line {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: 0.35rem 0.5rem;
}

#hero-name {
  display: inline-flex;
  gap: 0.06em;
}

.hero-name-char {
  display: inline-block;
  background: linear-gradient(110deg, #38bdf8, #818cf8, #c084fc, #22d3ee, #38bdf8);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0;
  transform: translateY(12px) translateZ(0);
  animation:
    charIn 0.55s cubic-bezier(0.22, 1, 0.36, 1) forwards,
    gradientFlow 5s ease infinite;
  animation-delay:
    var(--delay, 0s),
    calc(var(--delay, 0s) + 0.55s);
}

@keyframes gradientFlow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes charIn {
  to {
    opacity: 1;
    transform: translateY(0) translateZ(0);
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.role-wrap {
  min-height: 1.6em;
  margin-top: 0.5rem;
  animation: fadeUp 0.8s ease 0.45s both;
}

#role {
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--text-muted);
  font-weight: 500;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

#role.is-switching {
  opacity: 0;
  transform: translateY(6px);
}

.hero-cta {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  animation: fadeUp 0.8s ease 0.55s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.35s ease, background 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 12px 32px var(--ring), 0 0 0 0 rgba(99, 102, 241, 0.45);
  position: relative;
  overflow: hidden;
  animation: ctaGlow 3.2s ease-in-out infinite;
}

@keyframes ctaGlow {
  0%, 100% { box-shadow: 0 12px 32px var(--ring), 0 0 28px rgba(99, 102, 241, 0.25); }
  50% { box-shadow: 0 14px 40px var(--ring), 0 0 42px rgba(124, 58, 237, 0.45); }
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.28) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 20px 48px var(--ring), 0 0 50px rgba(124, 58, 237, 0.5);
  animation: none;
}

.btn-primary:hover::after {
  transform: translateX(100%);
}

.btn-ghost {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 91, 253, 0.45);
  box-shadow: 0 12px 32px var(--ring);
}

.social {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  animation: fadeUp 0.8s ease 0.65s both;
}

.social a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  font-size: 0.9rem;
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s ease, box-shadow 0.25s ease;
}

.social a:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 91, 253, 0.35);
  box-shadow: 0 16px 36px var(--ring);
}

.social a i {
  color: var(--accent);
}

.card {
  background: var(--bg-elevated);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: clamp(1.35rem, 3vw, 1.85rem);
  box-shadow: var(--shadow);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.3s ease;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.22, 1, 0.36, 1), transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* 3D skill cards */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.5rem;
  perspective: 1200px;
}

.skill-card-3d {
  position: relative;
  border-radius: var(--radius);
  transform-style: preserve-3d;
  outline: none;
  --rx: 0deg;
  --ry: 0deg;
  --tz: 0px;
}

.skill-card-3d:focus-within .skill-card-face {
  box-shadow: 0 28px 60px rgba(59, 91, 253, 0.22);
}

.skill-card-face {
  position: relative;
  border-radius: inherit;
  padding: 1.35rem 1.5rem 1.5rem;
  background: var(--bg-elevated);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow:
    0 4px 0 rgba(255, 255, 255, 0.06) inset,
    0 18px 40px rgba(15, 23, 42, 0.1),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  transform: rotateX(var(--rx)) rotateY(var(--ry)) translateZ(var(--tz));
  transition: transform 0.12s ease-out, box-shadow 0.35s ease, border-color 0.3s ease;
  transform-style: preserve-3d;
  will-change: transform;
}

[data-theme="dark"] .skill-card-face {
  box-shadow:
    0 4px 0 rgba(255, 255, 255, 0.04) inset,
    0 22px 50px rgba(0, 0, 0, 0.45),
    0 0 40px color-mix(in srgb, var(--skill-glow, #6366f1) 25%, transparent);
}

.skill-card-3d:hover .skill-card-face,
.skill-card-3d.is-active .skill-card-face {
  border-color: color-mix(in srgb, var(--skill-glow, #6366f1) 45%, var(--glass-border));
  box-shadow:
    0 8px 0 rgba(255, 255, 255, 0.05) inset,
    0 28px 56px rgba(15, 23, 42, 0.14),
    0 0 50px var(--skill-glow-soft, rgba(99, 102, 241, 0.35));
}

.skill-card-3d::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: calc(var(--radius) - 6px);
  background: radial-gradient(ellipse at 30% 0%, var(--skill-glow-soft, rgba(99, 102, 241, 0.2)), transparent 65%);
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  transition: opacity 0.35s ease;
}

.skill-card-3d:hover::after,
.skill-card-3d.is-active::after {
  opacity: 1;
}

.skill-card-face > * {
  position: relative;
  z-index: 1;
}

.skill-top {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1rem;
}

.skill-brand-icon {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.08));
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(255, 255, 255, 0.12) inset;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.3s ease;
}

[data-theme="dark"] .skill-brand-icon {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.skill-card-3d:hover .skill-brand-icon {
  transform: scale(1.08) translateZ(12px);
  filter: drop-shadow(0 8px 16px var(--skill-glow-soft, rgba(99, 102, 241, 0.4)));
}

.skill-brand-icon svg {
  width: 34px;
  height: 34px;
  display: block;
}

.skill-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}

.skill-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.progress {
  height: 9px;
  border-radius: 999px;
  background: var(--progress-track);
  overflow: hidden;
  margin-top: 0.65rem;
}

.progress-bar {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--bar-gradient, linear-gradient(90deg, var(--accent), var(--accent-2)));
  box-shadow: 0 0 14px var(--skill-glow-soft, rgba(99, 102, 241, 0.45));
  transition: width 1s cubic-bezier(0.22, 1, 0.36, 1);
}

.skill-card-3d.visible .progress-bar {
  width: var(--w, 80%);
}

/* Per-skill brand glow */
.skill-card-3d[data-brand="java"] {
  --skill-glow: #f89820;
  --skill-glow-soft: rgba(248, 152, 32, 0.45);
  --bar-gradient: linear-gradient(90deg, #f89820, #e76f00);
}
.skill-card-3d[data-brand="python"] {
  --skill-glow: #3776ab;
  --skill-glow-soft: rgba(55, 118, 171, 0.45);
  --bar-gradient: linear-gradient(90deg, #3776ab, #ffd43b);
}
.skill-card-3d[data-brand="javascript"] {
  --skill-glow: #f7df1e;
  --skill-glow-soft: rgba(247, 223, 30, 0.5);
  --bar-gradient: linear-gradient(90deg, #f7df1e, #f0db4f);
}
.skill-card-3d[data-brand="react"] {
  --skill-glow: #61dafb;
  --skill-glow-soft: rgba(97, 218, 251, 0.45);
  --bar-gradient: linear-gradient(90deg, #61dafb, #21a1f3);
}
.skill-card-3d[data-brand="nodejs"] {
  --skill-glow: #3c873a;
  --skill-glow-soft: rgba(60, 135, 58, 0.45);
  --bar-gradient: linear-gradient(90deg, #3c873a, #68a063);
}
.skill-card-3d[data-brand="spring"] {
  --skill-glow: #6db33f;
  --skill-glow-soft: rgba(109, 179, 63, 0.45);
  --bar-gradient: linear-gradient(90deg, #6db33f, #4a8c2a);
}
.skill-card-3d[data-brand="springboot"] {
  --skill-glow: #6db33f;
  --skill-glow-soft: rgba(109, 179, 63, 0.45);
  --bar-gradient: linear-gradient(90deg, #6db33f, #3d7a28);
}
.skill-card-3d[data-brand="aws"] {
  --skill-glow: #ff9900;
  --skill-glow-soft: rgba(255, 153, 0, 0.45);
  --bar-gradient: linear-gradient(90deg, #ff9900, #ec7211);
}
.skill-card-3d[data-brand="aiml"] {
  --skill-glow: #a855f7;
  --skill-glow-soft: rgba(168, 85, 247, 0.45);
  --bar-gradient: linear-gradient(90deg, #6366f1, #ec4899, #a855f7);
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  position: relative;
  overflow: hidden;
  padding: 0;
  border-radius: var(--radius);
  min-height: 300px;
  display: flex;
  flex-direction: column;
  transform: translateZ(0);
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.45s ease, border-color 0.35s ease;
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, rgba(59, 91, 253, 0.2), transparent 42%, rgba(124, 58, 237, 0.18));
  opacity: 0;
  transition: opacity 0.45s ease;
  pointer-events: none;
  z-index: 1;
}

.project-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.18), transparent 55%);
  opacity: 0;
  mix-blend-mode: overlay;
  transition: opacity 0.45s ease;
  pointer-events: none;
  z-index: 2;
}

.project-card:hover::before,
.project-card:hover::after {
  opacity: 1;
}

.project-card:hover {
  transform: translateY(-10px) scale(1.03);
  box-shadow: 0 32px 64px rgba(59, 91, 253, 0.25), 0 0 0 1px rgba(124, 58, 237, 0.2);
  border-color: rgba(124, 58, 237, 0.35);
}

.project-inner {
  position: relative;
  z-index: 3;
  padding: 1.85rem;
  display: flex;
  flex-direction: column;
  height: 100%;
  flex: 1;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.project-card:hover .project-inner {
  transform: translateY(-6px) scale(1.02);
}

.project-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.65rem;
}

.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 0.65rem;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  flex: 1;
  margin-bottom: 1.25rem;
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.project-actions .btn {
  padding: 0.65rem 1.15rem;
  font-size: 0.88rem;
}

.btn-code {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 24px var(--ring);
}

.btn-code:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 36px var(--ring), 0 0 28px rgba(124, 58, 237, 0.4);
}

.btn-live {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--glass-border);
}

.btn-live:hover {
  border-color: rgba(59, 91, 253, 0.55);
  background: rgba(59, 91, 253, 0.1);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px var(--ring);
}

.timeline {
  border-left: 3px solid transparent;
  border-image: linear-gradient(180deg, var(--accent), var(--accent-2)) 1;
  padding-left: 1.5rem;
}

.timeline .item {
  position: relative;
  margin-bottom: 1.5rem;
  padding-left: 0.25rem;
}

.timeline .item:last-child {
  margin-bottom: 0;
}

.timeline .item::before {
  content: "";
  position: absolute;
  left: -1.62rem;
  top: 0.35rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 4px var(--bg);
}

.timeline b {
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.timeline p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 0.25rem;
}

footer {
  margin-top: 3rem;
  padding: 2.5rem clamp(1.25rem, 4vw, 2.5rem) 2rem;
  text-align: center;
  background: var(--bg-elevated);
  border-top: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
}

footer h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

footer .social {
  margin-top: 0;
  margin-bottom: 1.25rem;
}

footer p {
  color: var(--text-muted);
  font-size: 0.88rem;
}

@media (max-width: 600px) {
  .hero-cta {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }

  .btn {
    width: 100%;
  }

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

  .back-to-top {
    right: 1rem;
    bottom: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero-aurora {
    animation: none;
  }

  .btn-primary {
    animation: none;
  }
}