/* ===================================================================
   NAVANEETH RAO — Modern Engineer Portfolio
   Premium design with animations, glassmorphism, gradients, and 3D effects
   =================================================================== */

/* --- CSS Variables / Theming --- */
:root {
  --bg: #f8fafc;
  --bg-deep: #eef2f7;
  --surface: rgba(255, 255, 255, 0.7);
  --surface-solid: #ffffff;
  --surface-hover: rgba(255, 255, 255, 0.9);
  --text: #0f172a;
  --text-secondary: #334155;
  --muted: #64748b;
  --line: rgba(148, 163, 184, 0.25);
  --line-strong: rgba(148, 163, 184, 0.4);
  --brand: #6366f1;
  --brand-light: #818cf8;
  --brand-dark: #4f46e5;
  --brand-glow: rgba(99, 102, 241, 0.35);
  --accent: #06b6d4;
  --accent-light: #22d3ee;
  --gradient-1: #6366f1;
  --gradient-2: #8b5cf6;
  --gradient-3: #06b6d4;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow: 0 4px 24px -4px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 50px -12px rgba(15, 23, 42, 0.15);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
  --header-bg: rgba(248, 250, 252, 0.8);
  --card-border: rgba(148, 163, 184, 0.15);
  --tag-bg: rgba(99, 102, 241, 0.08);
  --tag-text: #4f46e5;
  --orb-1: rgba(99, 102, 241, 0.12);
  --orb-2: rgba(6, 182, 212, 0.1);
  --orb-3: rgba(139, 92, 246, 0.08);
  --scrollbar: rgba(99, 102, 241, 0.3);
  --code-font: "JetBrains Mono", "Fira Code", monospace;
}

body[data-theme="dark"] {
  --bg: #0a0f1a;
  --bg-deep: #060a12;
  --surface: rgba(15, 23, 42, 0.6);
  --surface-solid: #111827;
  --surface-hover: rgba(15, 23, 42, 0.8);
  --text: #f1f5f9;
  --text-secondary: #cbd5e1;
  --muted: #94a3b8;
  --line: rgba(148, 163, 184, 0.12);
  --line-strong: rgba(148, 163, 184, 0.2);
  --brand: #818cf8;
  --brand-light: #a5b4fc;
  --brand-dark: #6366f1;
  --brand-glow: rgba(129, 140, 248, 0.25);
  --accent: #22d3ee;
  --accent-light: #67e8f9;
  --gradient-1: #818cf8;
  --gradient-2: #a78bfa;
  --gradient-3: #22d3ee;
  --shadow: 0 4px 24px -4px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 20px 50px -12px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(129, 140, 248, 0.1);
  --header-bg: rgba(10, 15, 26, 0.8);
  --card-border: rgba(255, 255, 255, 0.1);
  --tag-bg: rgba(129, 140, 248, 0.1);
  --tag-text: #a5b4fc;
  --orb-1: rgba(99, 102, 241, 0.08);
  --orb-2: rgba(6, 182, 212, 0.06);
  --orb-3: rgba(139, 92, 246, 0.05);
  --scrollbar: rgba(129, 140, 248, 0.4);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar) transparent;
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--brand);
  color: #fff;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--scrollbar);
  border-radius: 999px;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.skip-link,
.skip-to-content {
  position: fixed;
  top: 0.75rem;
  left: 1rem;
  background: var(--surface-solid);
  color: var(--text);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xs);
  padding: 0.5rem 0.75rem;
  font-weight: 600;
  text-decoration: none;
  z-index: 140;
  transform: translateY(-200%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.skip-link:focus,
.skip-link:focus-visible,
.skip-to-content:focus,
.skip-to-content:focus-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* --- Scroll Progress Bar --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
  z-index: 100;
  transition: width 0.1s linear;
}

/* --- Animated Background --- */
.bg-effects {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 1;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: var(--orb-1);
  top: -15%;
  right: -10%;
  animation: float-orb 20s ease-in-out infinite;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: var(--orb-2);
  bottom: 10%;
  left: -10%;
  animation: float-orb 25s ease-in-out infinite reverse;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: var(--orb-3);
  top: 40%;
  right: 20%;
  animation: float-orb 30s ease-in-out infinite 5s;
}

@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.05); }
  50% { transform: translate(-20px, 30px) scale(0.95); }
  75% { transform: translate(40px, 20px) scale(1.03); }
}

#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* --- Layout --- */
.container {
  width: min(1140px, 90vw);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s, border-color 0.3s;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

/* --- Logo --- */
.logo {
  color: var(--text);
  text-decoration: none;
  font-family: var(--code-font);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  transition: color 0.3s;
}

.logo:hover { color: var(--brand); }

.logo-bracket {
  color: var(--brand);
  font-weight: 500;
}

/* --- Navigation --- */
.nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav > a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
  position: relative;
}

.nav > a:hover {
  color: var(--text);
  background: var(--tag-bg);
}

/* --- Hamburger Menu --- */
.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
}

.hamburger {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  position: relative;
  transition: background 0.3s;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, top 0.3s;
}

.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }

.menu-toggle[aria-expanded="true"] .hamburger { background: transparent; }
.menu-toggle[aria-expanded="true"] .hamburger::before { top: 0; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .hamburger::after { top: 0; transform: rotate(-45deg); }

/* --- Theme Toggle --- */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  width: 38px;
  height: 38px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.3s;
}

.theme-toggle:hover {
  border-color: var(--brand);
  transform: rotate(15deg);
}

.icon-sun { display: none; }
.icon-moon { display: block; }
body[data-theme="dark"] .icon-sun { display: block; }
body[data-theme="dark"] .icon-moon { display: none; }

.command-hint {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.55rem;
  font-family: var(--code-font);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.command-hint:hover {
  border-color: var(--brand);
  color: var(--brand);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  border-radius: var(--radius-sm);
  padding: 0.7rem 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  color: #fff;
  box-shadow: 0 4px 15px var(--brand-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--brand-glow);
}

.btn-outline {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  border-color: var(--brand);
  color: var(--brand);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-small {
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
}

.btn-ghost-nav {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--text);
}

.btn-ghost-nav:hover {
  border-color: var(--brand);
  color: var(--brand);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-glow::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-3));
  z-index: -1;
  opacity: 0;
  filter: blur(12px);
  transition: opacity 0.4s;
}

.btn-glow:hover::after { opacity: 0.5; }

/* --- Hero --- */
.hero {
  padding: 6rem 0 3rem;
  min-height: calc(100vh - 72px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-content { max-width: 750px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1rem 0.45rem 0.65rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #22c55e;
  position: relative;
  flex-shrink: 0;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.4);
  animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.2); opacity: 0; }
}

h1, h2, h3, h4 {
  font-family: "Outfit", "Inter", sans-serif;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-copy {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 65ch;
  line-height: 1.8;
}

.company-highlight {
  color: var(--brand);
  font-weight: 600;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0;
}

/* --- Stats --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gradient-1), var(--gradient-3));
  opacity: 0;
  transition: opacity 0.3s;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-glow);
}

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

.stat-icon {
  color: var(--brand);
  margin-bottom: 0.75rem;
  opacity: 0.8;
}

.stat-card strong {
  display: block;
  font-size: 2rem;
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-card span {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
}

/* --- Sections --- */
.section {
  padding: 5rem 0 2rem;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.section-tag {
  font-family: var(--code-font);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--brand);
  background: var(--tag-bg);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--line);
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  max-width: 60ch;
}

.about-text strong {
  color: var(--text);
}

.about-highlights {
  display: grid;
  gap: 1rem;
  padding-left: 0.75rem;
}

.highlight-card {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.highlight-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-glow);
}

.highlight-card svg {
  color: var(--brand);
  margin-bottom: 0.75rem;
}

.highlight-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
}

.highlight-card p {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

/* --- Projects --- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  backdrop-filter: blur(10px);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s, border-color 0.3s;
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  will-change: transform;
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--brand-glow), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
}

.project-card:hover,
.project-card:focus-within {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--brand-glow);
}

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

.project-meta {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.project-icon {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  background: var(--tag-bg);
  border: 1px solid var(--line);
}

.project-number {
  font-family: var(--code-font);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--line);
  line-height: 1;
  margin-bottom: 1rem;
  position: relative;
}

.project-company {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  position: relative;
}

.project-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
  position: relative;
}

.project-card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
  position: relative;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  position: relative;
}

.project-stack span {
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--line);
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}

.timeline-line {
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--brand) 0%, var(--accent) 45%, rgba(148, 163, 184, 0.3) 75%, transparent 100%);
  border-radius: 2px;
}

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

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

.timeline-dot {
  position: absolute;
  left: -2.5rem;
  top: 1.35rem;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dot-core {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--surface-solid);
  border: 2.5px solid var(--brand);
  position: relative;
  z-index: 2;
}

.dot-ping {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: var(--brand-glow);
  animation: dot-ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes dot-ping {
  75%, 100% { transform: scale(2); opacity: 0; }
}

.timeline-content {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.timeline-content:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-glow);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.timeline-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
  letter-spacing: -0.01em;
}

.timeline-company {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand);
}

.timeline-date {
  font-family: var(--code-font);
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
  background: var(--tag-bg);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-xs);
  flex-shrink: 0;
}

.timeline-content p {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

/* --- Skills --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.skill-category {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.skill-category:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-glow);
}

.skill-category h4 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.skill-category h4 svg {
  color: var(--brand);
  flex-shrink: 0;
}

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

.skill-tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--line);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.3s;
}

.skill-tag:hover {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--brand-glow);
}

/* --- Education --- */
.education-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 768px) {
  .education-grid { grid-template-columns: 1fr; }
}

/* --- Contact --- */
.contact-card {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: calc(var(--radius) * 1.5);
  padding: 3rem;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.contact-glow {
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--brand-glow) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}

.contact-card .section-header { margin-bottom: 1rem; }

.contact-card > p {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  max-width: 55ch;
  position: relative;
}

.contact-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  position: relative;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
  background: var(--surface);
  transition: all 0.3s;
}

.contact-link:hover {
  border-color: var(--brand);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.contact-link svg {
  color: var(--brand);
  flex-shrink: 0;
}

.contact-link strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
}

.contact-link span {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
}


.command-palette[hidden] {
  display: none !important;
}

.command-palette {

  position: fixed;
  inset: 0;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  background: rgba(2, 6, 23, 0.55);
  backdrop-filter: blur(8px);
  z-index: 130;
}

.command-palette.open {
  display: flex;
}

.command-dialog {
  width: min(560px, 92vw);
  background: var(--surface-solid);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 1rem;
}

.command-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.command-dialog p {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.command-help {
  margin-bottom: 0.75rem;
}

.command-close {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  border-radius: var(--radius-xs);
  padding: 0.22rem 0.45rem;
  font-family: var(--code-font);
  font-size: 0.72rem;
  cursor: pointer;
}

.command-close:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.command-list {
  display: grid;
  gap: 0.5rem;
}

.command-list a {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  padding: 0.65rem 0.75rem;
  font-weight: 500;
}

.command-list a:hover {
  border-color: var(--brand);
  color: var(--brand);
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
  padding: 1.5rem 0;
  position: relative;
  z-index: 1;
}

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

.site-footer p {
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-tagline {
  font-family: var(--code-font);
  font-size: 0.78rem !important;
  opacity: 0.7;
}

/* --- Scroll Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* --- Active Nav Link --- */
.nav > a.active {
  color: var(--brand);
  background: var(--tag-bg);
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .menu-toggle { display: flex; }

  .nav {
    position: absolute;
    top: 72px;
    right: 5vw;
    left: 5vw;
    background: var(--surface-solid);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    gap: 0.25rem;
    display: none;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
  }

  .nav.open {
    display: flex;
    animation: slide-down 0.3s ease;
  }

  @keyframes slide-down {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .nav > a {
    padding: 0.65rem 0.75rem;
    font-size: 0.95rem;
  }

  .theme-toggle {
    width: 100%;
    justify-content: center;
  }

  .command-hint {
    width: 100%;
  }

  .btn-small { width: 100%; }

  .hero {
    padding: 3rem 0 2rem;
    min-height: auto;
  }

  h1 { font-size: clamp(2rem, 7vw, 2.8rem); }

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

  .timeline-header {
    flex-direction: column;
    gap: 0.4rem;
  }

  .contact-card {
    padding: 1.75rem;
  }

  .footer-content {
    flex-direction: column;
    gap: 0.25rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container { width: 94vw; }
  .hero-copy { font-size: 1rem; }
  .section { padding: 3rem 0 1rem; }
}

/* --- Resume Page --- */
.resume-page {
  padding-top: 3rem;
}

.resume-hero {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.resume-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
}

.resume-hero .eyebrow {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--brand);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.resume-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 0.5rem;
}

.resume-hero .hero-copy {
  font-size: 1rem;
}

.resume-block {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem;
  margin-bottom: 1rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s, box-shadow 0.3s;
}

.resume-block:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.resume-block h2 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.resume-block p {
  color: var(--muted);
  max-width: 75ch;
}

/* Legacy tags class for resume */
.tags {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tags li {
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.3s;
}

.tags li:hover {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  transform: translateY(-2px);
}

/* --- Utility: Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}