/* ══════════════════════════════════════════
   AR Portfolio — style.css
   Dark mode · Spring Green + Java Orange
   ══════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
  --clr-bg: #0b0f17;
  --clr-bg-alt: #0f1520;
  --clr-bg-card: #131b2a;
  --clr-bg-card-2: #1a2438;
  --clr-border: rgba(255, 255, 255, 0.07);
  --clr-border-2: rgba(255, 255, 255, 0.12);

  --clr-green: #6ee7b7;
  --clr-green-dim: #34d399;
  --clr-green-glow: rgba(110, 231, 183, 0.12);
  --clr-orange: #fb923c;
  --clr-orange-dim: #f97316;
  --clr-orange-glow: rgba(251, 146, 60, 0.12);

  --clr-text: #e2e8f0;
  --clr-text-muted: #64748b;
  --clr-text-dim: #94a3b8;
  --clr-white: #ffffff;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.5);
  --shadow-green: 0 0 40px rgba(110, 231, 183, 0.15);
  --shadow-orange: 0 0 40px rgba(251, 146, 60, 0.15);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ─── Light Mode Overrides ─── */
[data-theme="light"] {
  --clr-bg: #f0f4f8;
  --clr-bg-alt: #e8eef5;
  --clr-bg-card: #ffffff;
  --clr-bg-card-2: #dce6f0;
  --clr-border: rgba(0, 0, 0, 0.08);
  --clr-border-2: rgba(0, 0, 0, 0.14);

  --clr-green: #059669;
  --clr-green-dim: #047857;
  --clr-green-glow: rgba(5, 150, 105, 0.1);
  --clr-orange: #ea580c;
  --clr-orange-dim: #c2410c;
  --clr-orange-glow: rgba(234, 88, 12, 0.1);

  --clr-text: #1e293b;
  --clr-text-muted: #64748b;
  --clr-text-dim: #475569;
  --clr-white: #0f172a;

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.10);
  --shadow-green: 0 0 30px rgba(5, 150, 105, 0.10);
  --shadow-orange: 0 0 30px rgba(234, 88, 12, 0.10);
}

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

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

/* Smooth theme transitions across the whole page */
body,
body * {
  transition:
    background-color 0.35s ease,
    border-color 0.35s ease,
    color 0.35s ease,
    box-shadow 0.35s ease;
}

body {
  font-family: var(--font-sans);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--clr-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--clr-bg-card-2);
  border-radius: 3px;
}

/* ─── Container ─── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Utility ─── */
.gradient-text {
  background: linear-gradient(135deg, var(--clr-green) 0%, var(--clr-orange) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ══════════════════════════════════════════
   NAV
   ══════════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}

#navbar.scrolled {
  background: rgba(11, 15, 23, 0.92);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--clr-border);
  padding: 0;
}

[data-theme="light"] #navbar.scrolled {
  background: rgba(240, 244, 248, 0.92);
}

.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: padding var(--transition);
}

#navbar.scrolled .nav-inner {
  padding: 14px 24px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-white);
  letter-spacing: -0.5px;
}

.logo-bracket {
  background: linear-gradient(135deg, var(--clr-green), var(--clr-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-dim);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
  color: var(--clr-white);
  background: rgba(255, 255, 255, 0.06);
}

.nav-links .nav-cta {
  background: linear-gradient(135deg, var(--clr-green-dim), var(--clr-orange-dim));
  color: var(--clr-bg) !important;
  font-weight: 600;
  padding: 8px 18px;
}

.nav-links .nav-cta:hover {
  filter: brightness(1.1);
  background: inherit;
}

/* Theme Toggle Button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--clr-border-2);
  color: var(--clr-text-dim);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition), border-color var(--transition);
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: rgba(110, 231, 183, 0.12);
  color: var(--clr-green);
  border-color: rgba(110, 231, 183, 0.3);
  transform: rotate(20deg) scale(1.08);
}

[data-theme="light"] .theme-toggle {
  background: rgba(0, 0, 0, 0.05);
}

.theme-icon {
  display: flex;
  align-items: center;
}

/* Show moon in dark mode → clicking switches to light */
.theme-icon--dark {
  display: flex;
}

.theme-icon--light {
  display: none;
}

[data-theme="light"] .theme-icon--dark {
  display: none;
}

[data-theme="light"] .theme-icon--light {
  display: flex;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  background: rgba(11, 15, 23, 0.98);
  backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--clr-text-dim);
  padding: 12px 32px;
  border-radius: var(--radius-md);
  transition: color var(--transition), background var(--transition);
}

.mobile-nav a:hover {
  color: var(--clr-green);
  background: var(--clr-green-glow);
}

/* ══════════════════════════════════════════
   HERO
   ══════════════════════════════════════════ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

/* Grid background */
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
  pointer-events: none;
  transition: none !important;
}

[data-theme="light"] .hero-bg-grid {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
}

/* Ambient glows */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  animation: glow-pulse 8s ease-in-out infinite alternate;
  transition: none !important;
  /* don't fade glow on theme switch */
}

.hero-glow--green {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(110, 231, 183, 0.12), transparent 70%);
  top: -100px;
  left: -200px;
}

.hero-glow--orange {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(251, 146, 60, 0.10), transparent 70%);
  bottom: -100px;
  right: -150px;
  animation-delay: -4s;
}

[data-theme="light"] .hero-glow--green {
  background: radial-gradient(circle, rgba(5, 150, 105, 0.08), transparent 70%);
}

[data-theme="light"] .hero-glow--orange {
  background: radial-gradient(circle, rgba(234, 88, 12, 0.07), transparent 70%);
}

@keyframes glow-pulse {
  from {
    opacity: 0.6;
    transform: scale(1);
  }

  to {
    opacity: 1;
    transform: scale(1.08);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(110, 231, 183, 0.08);
  border: 1px solid rgba(110, 231, 183, 0.2);
  border-radius: 100px;
  padding: 8px 18px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-green);
  letter-spacing: 0.4px;
  margin-bottom: 28px;
  animation: fade-up 0.6s ease both;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--clr-green);
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.3;
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--clr-white);
  margin-bottom: 24px;
  animation: fade-up 0.6s 0.1s ease both;
}

.hero-sub-title {
  font-size: clamp(2rem, 5vw, 3.8rem);
  color: var(--clr-text-dim);
  font-weight: 700;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--clr-text-dim);
  max-width: 600px;
  margin-bottom: 48px;
  animation: fade-up 0.6s 0.2s ease both;
  line-height: 1.8;
}

.hero-description strong {
  color: var(--clr-green);
}

.hero-description em {
  color: var(--clr-orange);
  font-style: normal;
}

/* KPI Bar */
.kpi-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 48px;
  animation: fade-up 0.6s 0.3s ease both;
}

.kpi-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition);
}

.kpi-card:hover {
  border-color: var(--clr-border-2);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.kpi-card--highlight {
  border-color: rgba(110, 231, 183, 0.25);
  background: linear-gradient(135deg, rgba(110, 231, 183, 0.08), rgba(11, 15, 23, 0));
  box-shadow: 0 0 30px rgba(110, 231, 183, 0.08);
}

.kpi-card--highlight:hover {
  border-color: rgba(110, 231, 183, 0.4);
  box-shadow: 0 0 40px rgba(110, 231, 183, 0.15);
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-white);
  line-height: 1;
}

.kpi-card--highlight .kpi-value {
  color: var(--clr-green);
}

.kpi-unit {
  font-size: 1.1rem;
  color: var(--clr-orange);
}

.kpi-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-detail {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
}

/* Hero Actions */
.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  animation: fade-up 0.6s 0.4s ease both;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--clr-green-dim), var(--clr-orange-dim));
  color: var(--clr-bg);
  box-shadow: 0 4px 20px rgba(52, 211, 153, 0.2);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(52, 211, 153, 0.35);
  filter: brightness(1.05);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--clr-border-2);
  color: var(--clr-text-dim);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--clr-white);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--clr-text-muted);
  font-size: 0.7rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  animation: fade-up 0.6s 0.8s ease both, scroll-bounce 2s 1.5s ease-in-out infinite;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--clr-text-muted), transparent);
}

@keyframes scroll-bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(8px);
  }
}

/* ══════════════════════════════════════════
   CERT BANNER
   ══════════════════════════════════════════ */
#cert-banner {
  background: linear-gradient(135deg,
      rgba(248, 0, 0, 0.06) 0%,
      rgba(11, 15, 23, 0) 60%,
      rgba(251, 146, 60, 0.04) 100%);
  border-top: 1px solid rgba(248, 0, 0, 0.15);
  border-bottom: 1px solid rgba(248, 0, 0, 0.15);
  padding: 28px 0;
}

.cert-inner {
  display: flex;
  align-items: center;
  gap: 24px;
}

.cert-logo svg {
  flex-shrink: 0;
}

.cert-text {
  flex: 1;
}

.cert-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-white);
}

.cert-sub {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-top: 2px;
}

.cert-badge-wrap {
  margin-left: auto;
}

.cert-badge {
  position: relative;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(248, 0, 0, 0.15), rgba(251, 146, 60, 0.15));
  border: 2px solid rgba(248, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: #F80000;
}

.cert-badge-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px dashed rgba(248, 0, 0, 0.25);
  animation: spin 20s linear infinite;
}

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

/* ══════════════════════════════════════════
   SECTIONS — shared
   ══════════════════════════════════════════ */
.section {
  padding: 100px 0;
}

.section--alt {
  background: var(--clr-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--clr-green);
  border: 1px solid rgba(110, 231, 183, 0.2);
  background: rgba(110, 231, 183, 0.06);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--clr-white);
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--clr-text-muted);
  max-width: 500px;
  margin: 0 auto;
}

/* ══════════════════════════════════════════
   EXPERTISE GRID
   ══════════════════════════════════════════ */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.expertise-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}

.expertise-card.visible {
  animation: card-in 0.6s ease forwards;
}

.expertise-card[data-index="1"] {
  animation-delay: 0.1s;
}

.expertise-card[data-index="2"] {
  animation-delay: 0.2s;
}

.expertise-card[data-index="3"] {
  animation-delay: 0.3s;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.expertise-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--clr-green), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.expertise-card:hover {
  transform: translateY(-4px);
  border-color: rgba(110, 231, 183, 0.2);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), var(--shadow-green);
}

.expertise-card:hover::after {
  opacity: 1;
}

.expertise-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(110, 231, 183, 0.08);
  border: 1px solid rgba(110, 231, 183, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-green);
  margin-bottom: 24px;
  transition: background var(--transition), box-shadow var(--transition);
}

.expertise-card:hover .expertise-icon {
  background: rgba(110, 231, 183, 0.14);
  box-shadow: 0 0 20px rgba(110, 231, 183, 0.15);
}

.expertise-icon--highlight {
  background: rgba(251, 146, 60, 0.08);
  border-color: rgba(251, 146, 60, 0.2);
  color: var(--clr-orange);
}

.expertise-card:hover .expertise-icon--highlight {
  background: rgba(251, 146, 60, 0.14);
  box-shadow: 0 0 20px rgba(251, 146, 60, 0.2);
}

.expertise-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 12px;
}

.expertise-card p {
  font-size: 0.9rem;
  color: var(--clr-text-dim);
  line-height: 1.75;
  margin-bottom: 20px;
}

.expertise-card p strong {
  color: var(--clr-white);
}

.expertise-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.expertise-tags span {
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.3px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
}

/* ══════════════════════════════════════════
   PROJECTS
   ══════════════════════════════════════════ */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.project-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 40px;
  align-items: start;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--clr-green-dim), var(--clr-orange-dim));
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover {
  border-color: rgba(110, 231, 183, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  transform: translateY(-3px);
}

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

.project-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 4px;
}

.project-number {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.05);
  line-height: 1;
}

.project-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--clr-orange);
  border: 1px solid rgba(251, 146, 60, 0.25);
  background: rgba(251, 146, 60, 0.06);
  padding: 4px 10px;
  border-radius: 100px;
}

.project-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}

.project-description {
  font-size: 0.92rem;
  color: var(--clr-text-dim);
  line-height: 1.8;
  margin-bottom: 24px;
}

.project-description strong {
  color: var(--clr-white);
}

.project-highlights {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--clr-text-dim);
}

.highlight-icon {
  color: var(--clr-green);
  font-size: 0.6rem;
  font-style: normal;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-tech span {
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  background: rgba(110, 231, 183, 0.06);
  border: 1px solid rgba(110, 231, 183, 0.15);
  color: var(--clr-green);
}

/* ══════════════════════════════════════════
   TECH STACK
   ══════════════════════════════════════════ */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stack-group {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: border-color var(--transition), transform var(--transition);
}

.stack-group:hover {
  border-color: var(--clr-border-2);
  transform: translateY(-3px);
}

.stack-group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--clr-border);
}

.stack-group-icon {
  font-size: 1.2rem;
}

.stack-group-header h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--clr-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stack-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.stack-item {
  display: flex;
  align-items: center;
  gap: 12px;
  transition: transform var(--transition);
}

.stack-item:hover {
  transform: translateX(4px);
}

.stack-item span {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-dim);
}

.stack-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  font-family: var(--font-mono);
  flex-shrink: 0;
  border: 1px solid transparent;
}

.stack-icon img {
  display: block;
  object-fit: contain;
}

.stack-icon--java {
  background: rgba(248, 75, 0, 0.12);
  color: #f84b00;
  border-color: rgba(248, 75, 0, 0.2);
}

.stack-icon--js {
  background: rgba(247, 223, 30, 0.1);
  color: #f7df1e;
  border-color: rgba(247, 223, 30, 0.2);
}

.stack-icon--ts {
  background: rgba(49, 120, 198, 0.12);
  color: #3178c6;
  border-color: rgba(49, 120, 198, 0.2);
}

.stack-icon--sql {
  background: rgba(110, 231, 183, 0.1);
  color: var(--clr-green);
  border-color: rgba(110, 231, 183, 0.2);
  font-size: 1rem;
}

.stack-icon--spring {
  background: rgba(109, 179, 63, 0.12);
  color: #6db33f;
  border-color: rgba(109, 179, 63, 0.2);
  font-size: 1rem;
}

.stack-icon--angular {
  background: rgba(220, 0, 52, 0.10);
  color: #dd0031;
  border-color: rgba(220, 0, 52, 0.2);
  font-size: 1rem;
}

.stack-icon--rxjs {
  background: rgba(215, 77, 40, 0.12);
  color: #d74d28;
  border-color: rgba(215, 77, 40, 0.2);
}

.stack-icon--hibernate {
  background: rgba(89, 140, 229, 0.1);
  color: #59bbe5;
  border-color: rgba(89, 140, 229, 0.2);
}

.stack-icon--docker {
  background: rgba(30, 136, 229, 0.1);
  color: #1e88e5;
  border-color: rgba(30, 136, 229, 0.2);
  font-size: 1rem;
}

.stack-icon--jenkins {
  background: rgba(210, 76, 41, 0.1);
  color: #d24b29;
  border-color: rgba(210, 76, 41, 0.2);
}

.stack-icon--sonar {
  background: rgba(83, 192, 214, 0.1);
  color: #53c0d6;
  border-color: rgba(83, 192, 214, 0.2);
  font-size: 1rem;
}

.stack-icon--liquibase {
  background: rgba(71, 131, 211, 0.1);
  color: #4783d3;
  border-color: rgba(71, 131, 211, 0.2);
}

.stack-icon--kafka {
  background: rgba(255, 255, 255, 0.06);
  color: var(--clr-text-dim);
  border-color: var(--clr-border);
}

.stack-icon--rabbit {
  background: rgba(255, 102, 0, 0.1);
  color: #ff6600;
  border-color: rgba(255, 102, 0, 0.2);
  font-size: 1rem;
}

.stack-icon--minio {
  background: rgba(196, 30, 58, 0.1);
  color: #c41e3a;
  border-color: rgba(196, 30, 58, 0.2);
}

.stack-icon--mysql {
  background: rgba(0, 117, 143, 0.1);
  color: #00758f;
  border-color: rgba(0, 117, 143, 0.2);
  font-size: 1rem;
}

/* ══════════════════════════════════════════
   QUALITY
   ══════════════════════════════════════════ */
.quality-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.quality-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.quality-card:hover {
  border-color: rgba(110, 231, 183, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), 0 0 40px rgba(110, 231, 183, 0.06);
}

.quality-bar-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.quality-bar {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
}

.quality-bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--clr-green-dim), var(--clr-orange-dim));
  border-radius: 3px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.quality-pct {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--clr-green);
  white-space: nowrap;
}

.quality-icon-wrap {
  margin-bottom: 20px;
  color: var(--clr-green);
}

.quality-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 10px;
}

.quality-card p {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.75;
}

/* ══════════════════════════════════════════
   EDUCATION
   ══════════════════════════════════════════ */
.edu-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: 48px;
}

.edu-timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-green-dim), transparent);
}

.edu-item {
  position: relative;
  margin-bottom: 48px;
}

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

.edu-dot {
  position: absolute;
  left: -42px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--clr-green-dim);
  border: 3px solid var(--clr-bg);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.5);
}

.edu-content {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  transition: border-color var(--transition), transform var(--transition);
}

.edu-content:hover {
  border-color: rgba(110, 231, 183, 0.2);
  transform: translateX(4px);
}

.edu-year {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--clr-orange);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.edu-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 10px;
}

.edu-content p {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  line-height: 1.75;
  margin-bottom: 18px;
}

.edu-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--clr-green);
  background: rgba(110, 231, 183, 0.08);
  border: 1px solid rgba(110, 231, 183, 0.2);
  padding: 4px 12px;
  border-radius: 100px;
}

/* ══════════════════════════════════════════
   CONTACT
   ══════════════════════════════════════════ */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 60px;
  align-items: center;
}

.contact-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--clr-white);
  letter-spacing: -0.5px;
  margin-bottom: 20px;
  line-height: 1.2;
}

.contact-desc {
  font-size: 1rem;
  color: var(--clr-text-dim);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 480px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--clr-text-dim);
  transition: color var(--transition), transform var(--transition);
}

.contact-link:hover {
  color: var(--clr-green);
  transform: translateX(4px);
}

.contact-link svg {
  color: var(--clr-text-muted);
  transition: color var(--transition);
}

.contact-link:hover svg {
  color: var(--clr-green);
}

.contact-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: 36px;
}

.contact-card-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: 20px;
}

.contact-card-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.contact-card-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--clr-text-dim);
}

.contact-card-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-green);
  flex-shrink: 0;
}

/* ══════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════ */
#footer {
  background: var(--clr-bg);
  border-top: 1px solid var(--clr-border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-white);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  transition: color var(--transition);
}

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

/* ══════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════ */
@media (max-width: 1024px) {
  .stack-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .quality-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .kpi-bar {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .project-card {
    grid-template-columns: 1fr;
    padding: 28px;
  }

  .project-meta {
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }

  .project-number {
    font-size: 2rem;
  }

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

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

  .contact-container {
    grid-template-columns: 1fr;
  }

  .cert-inner {
    flex-direction: column;
    text-align: center;
  }

  .cert-badge-wrap {
    margin-left: 0;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .kpi-bar {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }
}