:root {
  --bg-primary: #000000;
  --bg-secondary: #121212;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-soft: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.14);
  --text-primary: #f5f7fa;
  --text-muted: #a9b3c1;
  --accent-teal: #00e5ff;
  --accent-green: #00c853;
  --error: #ff7b7b;
  --shadow-soft: 0 16px 35px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.25);
  --radius-lg: 22px;
  --radius-md: 14px;
  --container: min(1140px, 92%);
}

html[data-theme="light"] {
  --bg-primary: #f5fbff;
  --bg-secondary: #eaf6ff;
  --surface: rgba(255, 255, 255, 0.75);
  --surface-soft: rgba(255, 255, 255, 0.9);
  --border: rgba(0, 0, 0, 0.12);
  --text-primary: #0f1822;
  --text-muted: #425364;
  --shadow-soft: 0 14px 30px rgba(5, 40, 67, 0.18);
  --shadow-glow: 0 0 24px rgba(0, 160, 190, 0.2);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at 10% 8%, rgba(0, 229, 255, 0.08), transparent 35%),
    radial-gradient(circle at 90% 85%, rgba(0, 200, 83, 0.08), transparent 30%),
    linear-gradient(170deg, var(--bg-primary), var(--bg-secondary));
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  transition: background 280ms ease, color 280ms ease;
}

#particleCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

.section {
  width: var(--container);
  margin: 0 auto;
  padding: 5.5rem 0;
}

h1,
h2,
h3 {
  line-height: 1.2;
}

h2 {
  font-size: clamp(1.7rem, 2.5vw, 2.3rem);
  margin-bottom: 2rem;
}

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

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-primary) 70%, transparent);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
}

.nav-shell {
  width: var(--container);
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--accent-teal);
}

.theme-toggle,
.menu-toggle {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-primary);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  font-size: 1rem;
  transition: transform 180ms ease, border-color 180ms ease;
}

.theme-toggle:hover,
.menu-toggle:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent-teal) 55%, var(--border));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.3rem;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  transition: 180ms ease;
}

.nav-links a:hover {
  color: var(--accent-teal);
}

.menu-toggle {
  display: none;
}

.hero {
  padding-top: 10rem;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 1.1rem;
  align-items: stretch;
}

.hero-content,
.hero-panel,
.stat-card,
.skill-card,
.project-card,
.terminal-window,
.contact-form,
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.hero-content {
  padding: clamp(1.3rem, 3vw, 2.2rem);
}

.eyebrow {
  text-transform: uppercase;
  color: var(--accent-green);
  letter-spacing: 0.12em;
  font-weight: 700;
  font-size: 0.77rem;
  margin-bottom: 0.9rem;
}

.hero h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  margin-bottom: 0.8rem;
}

.hero-title {
  color: var(--accent-teal);
  font-weight: 600;
  margin-bottom: 0.8rem;
}

.subtitle {
  color: var(--text-muted);
  max-width: 65ch;
  margin-bottom: 1.25rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-panel {
  padding: clamp(1rem, 2vw, 1.4rem);
}

.hero-panel h2 {
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.hero-panel ul {
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.hero-panel li {
  border: 1px solid color-mix(in srgb, var(--accent-teal) 20%, var(--border));
  border-radius: var(--radius-md);
  padding: 0.72rem 0.9rem;
  background: color-mix(in srgb, var(--bg-primary) 62%, transparent);
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border-radius: 12px;
  padding: 0.72rem 1rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: 220ms ease;
}

.btn-primary {
  background: linear-gradient(120deg, var(--accent-teal), var(--accent-green));
  color: #031015;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-outline {
  border-color: var(--border);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--accent-teal);
  color: var(--accent-teal);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
  padding-top: 0.6rem;
  padding-bottom: 0.4rem;
}

.stat-card {
  padding: 1.2rem;
  text-align: center;
}

.stat-card h3 {
  font-size: 1.65rem;
  color: var(--accent-teal);
  margin-bottom: 0.25rem;
}

.stat-card p {
  color: var(--text-muted);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
}

.skill-card {
  padding: 1.15rem;
}

.skill-card h3 {
  margin-bottom: 0.55rem;
}

.skill-card p {
  color: var(--text-muted);
  margin-bottom: 0.95rem;
}

.skill-meter {
  margin-bottom: 0.7rem;
}

.meter-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.meter-track {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.meter-fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(120deg, var(--accent-green), var(--accent-teal));
  border-radius: inherit;
  transition: width 900ms cubic-bezier(0.2, 0.65, 0.2, 1);
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  font-size: 0.84rem;
}

.filter-btn.active,
.filter-btn:hover {
  border-color: color-mix(in srgb, var(--accent-teal) 50%, var(--border));
  color: var(--accent-teal);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
}

.project-card {
  padding: 1.15rem;
  display: grid;
  gap: 0.75rem;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease, opacity 220ms ease;
}

.project-card.hidden {
  opacity: 0;
  transform: scale(0.97);
  pointer-events: none;
}

.project-card:hover {
  transform: translateY(-7px);
  border-color: color-mix(in srgb, var(--accent-teal) 42%, var(--border));
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.45), 0 0 24px rgba(0, 229, 255, 0.2);
}

.project-card p {
  color: var(--text-muted);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tags span {
  font-size: 0.78rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent-teal) 30%, var(--border));
  background: color-mix(in srgb, var(--accent-teal) 12%, transparent);
  color: var(--accent-teal);
  padding: 0.2rem 0.65rem;
}

.project-actions {
  display: flex;
  gap: 0.62rem;
  flex-wrap: wrap;
}

.terminal-window {
  overflow: hidden;
}

.terminal-head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  border-bottom: 1px solid var(--border);
  padding: 0.8rem 1rem;
  background: var(--surface-soft);
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot.red {
  background: #ff5f56;
}

.dot.yellow {
  background: #ffbd2e;
}

.dot.green {
  background: #27c93f;
}

.terminal-head p {
  color: var(--text-muted);
  margin-left: 0.35rem;
  font-size: 0.9rem;
}

.terminal-body {
  min-height: 220px;
  max-height: 300px;
  overflow-y: auto;
  padding: 1rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92rem;
  line-height: 1.7;
}

.line {
  margin-bottom: 0.3rem;
  color: color-mix(in srgb, var(--text-primary) 85%, var(--accent-teal));
  white-space: pre-wrap;
  word-break: break-word;
}

.line.command {
  color: var(--accent-green);
}

.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  border-top: 1px solid var(--border);
  padding: 0.75rem 1rem;
}

.prompt {
  color: var(--accent-green);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 700;
}

#terminalInput {
  width: 100%;
  background: transparent;
  border: 0;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  outline: none;
}

.cursor {
  width: 9px;
  height: 18px;
  border-radius: 1px;
  background: var(--accent-teal);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 0.95rem;
}

.contact-form {
  padding: 1.15rem;
  display: grid;
  gap: 0.92rem;
}

.form-row {
  display: grid;
  gap: 0.4rem;
}

.form-row label {
  font-weight: 600;
}

.form-row input,
.form-row textarea {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: color-mix(in srgb, var(--bg-primary) 72%, transparent);
  color: var(--text-primary);
  padding: 0.8rem 0.9rem;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--accent-teal);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.12);
}

.error {
  color: var(--error);
  min-height: 1.1em;
  font-size: 0.84rem;
}

.contact-card {
  padding: 1.15rem;
  display: grid;
  align-content: start;
  gap: 0.72rem;
}

.contact-card a {
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  transition: 180ms ease;
}

.contact-card a:hover {
  color: var(--accent-teal);
  border-color: color-mix(in srgb, var(--accent-teal) 40%, var(--border));
}

.toast-container {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  display: grid;
  gap: 0.65rem;
  z-index: 150;
}

.toast {
  min-width: 250px;
  max-width: 360px;
  border-radius: 12px;
  padding: 0.8rem 0.92rem;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-primary) 84%, transparent);
  box-shadow: var(--shadow-soft);
  animation: toastIn 240ms ease;
}

.toast.success {
  border-color: color-mix(in srgb, var(--accent-green) 65%, var(--border));
}

.toast.error {
  border-color: color-mix(in srgb, var(--error) 70%, var(--border));
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

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

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 560ms ease, transform 560ms ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .hero,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .stats,
  .skills-grid,
  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .section {
    padding: 4.35rem 0;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 50%;
    transform: translateX(-50%);
    width: var(--container);
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: color-mix(in srgb, var(--bg-primary) 88%, transparent);
    display: none;
    flex-direction: column;
    align-items: flex-start;
  }

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

  .stats,
  .skills-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .toast-container {
    left: 1rem;
    right: 1rem;
  }

  .toast {
    width: 100%;
    min-width: 0;
    max-width: none;
  }
}