@charset "UTF-8";

/* ============================================
   DESIGN TOKENS
   ============================================ */
:root {
  /* Backgrounds */
  --bg-base:       #080C14;
  --bg-surface:    #0D1220;
  --bg-card:       #0F1623;
  --bg-card-hover: #141d2e;
  --bg-alt:        #0A0F1A;

  /* Accent – Indigo → Blue gradient system */
  --accent:         #6366F1;
  --accent-hover:   #818CF8;
  --accent-blue:    #3B82F6;
  --accent-subtle:  rgba(99, 102, 241, 0.10);
  --accent-border:  rgba(99, 102, 241, 0.28);

  /* Gradients */
  --gradient-accent: linear-gradient(135deg, #6366F1 0%, #3B82F6 100%);
  --gradient-name:   linear-gradient(140deg, #E2E8F0 0%, #A5B4FC 50%, #818CF8 100%);
  --gradient-divider: linear-gradient(90deg, transparent 0%, rgba(99,102,241,0.25) 25%,
                       rgba(59,130,246,0.25) 75%, transparent 100%);

  /* Text */
  --text-primary:   #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted:     #4B5563;

  /* Borders */
  --border:        rgba(148, 163, 184, 0.08);
  --border-strong: rgba(148, 163, 184, 0.16);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* Shadows */
  --shadow-card:   0 4px 32px rgba(0, 0, 0, 0.5);
  --shadow-accent: 0 0 40px rgba(99, 102, 241, 0.12);
  --shadow-glow:   0 0 60px rgba(99, 102, 241, 0.16);

  /* Transitions */
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   LIGHT MODE OVERRIDES
   ============================================ */
[data-theme="light"] {
  --bg-base:       #F8FAFC;
  --bg-surface:    #FFFFFF;
  --bg-card:       #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --bg-alt:        #F1F5F9;

  --accent:         #4F46E5;
  --accent-hover:   #6366F1;
  --accent-blue:    #2563EB;
  --accent-subtle:  rgba(79, 70, 229, 0.07);
  --accent-border:  rgba(79, 70, 229, 0.22);

  --gradient-name: linear-gradient(140deg, #1E293B 0%, #4F46E5 55%, #6366F1 100%);
  --gradient-divider: linear-gradient(90deg, transparent 0%, rgba(79,70,229,0.2) 30%,
                       rgba(37,99,235,0.2) 70%, transparent 100%);

  --text-primary:   #0F172A;
  --text-secondary: #475569;
  --text-muted:     #94A3B8;

  --border:        #E2E8F0;
  --border-strong: #CBD5E1;

  --shadow-card:   0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-accent: 0 0 24px rgba(79, 70, 229, 0.08);
  --shadow-glow:   0 0 40px rgba(79, 70, 229, 0.10);

  --code-keyword: #4F46E5;
  --code-type:    #0369A1;
  --code-var:     #0891B2;
  --code-string:  #047857;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              color 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  /* Subtle ambient orbs via background */
  position: relative;
}

/* Global ambient orbs — fixed, CSS-only, GPU-friendly */
body::before {
  content: '';
  position: fixed;
  width: 720px;
  height: 720px;
  background: radial-gradient(circle at center,
    rgba(99, 102, 241, 0.09) 0%,
    rgba(99, 102, 241, 0.04) 40%,
    transparent 70%);
  top: -200px;
  right: -180px;
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}

body::after {
  content: '';
  position: fixed;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle at center,
    rgba(59, 130, 246, 0.07) 0%,
    transparent 65%);
  bottom: -120px;
  left: -120px;
  pointer-events: none;
  z-index: 0;
}

/* Scoped transition — only these need transform */
.btn, .nav-link, .highlight-card, .skill-tag,
.contact-link-card, .timeline-content, .skill-category,
.skill-badge-primary, .skill-badge-secondary,
.extra-role-card, .nda-card-inner {
  transition: background-color var(--transition),
              border-color var(--transition),
              color var(--transition),
              box-shadow var(--transition),
              transform var(--transition),
              opacity var(--transition);
}

/* Theme-colour-change transitions on structural elements */
.navbar, .code-window, .form-input, .form-textarea,
.education-card, .contact-form-wrapper, .section-alt,
.footer {
  transition: background-color 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

ul { list-style: none; }
img, svg { display: block; }

/* ============================================
   UTILITIES
   ============================================ */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.accent-text { color: var(--accent); }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

@keyframes pulse-ring {
  0%   { transform: scale(0.85); opacity: 0.8; }
  100% { transform: scale(2);    opacity: 0; }
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease 0.18s, transform 0.65s ease 0.18s;
}

.fade-in-delay.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   SECTION DIVIDER
   ============================================ */
.section-divider {
  height: 1px;
  width: 100%;
  background: var(--gradient-divider);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.38);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-strong);
}

.btn-secondary:hover {
  border-color: var(--accent-border);
  color: var(--accent-hover);
  transform: translateY(-1px);
  background: var(--accent-subtle);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.84rem;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 14px 0;
  background: rgba(8, 12, 20, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  border-bottom-color: var(--border);
  background: rgba(8, 12, 20, 0.96);
}

[data-theme="light"] .navbar {
  background: rgba(248, 250, 252, 0.88);
}

[data-theme="light"] .navbar.scrolled {
  background: rgba(248, 250, 252, 0.98);
  border-bottom-color: var(--border);
}

.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.logo-bracket {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.nav-link {
  padding: 6px 13px;
  border-radius: var(--radius-sm);
  font-size: 0.87rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.08);
}

[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
  background: rgba(79, 70, 229, 0.07);
}

/* Nav actions row (right side) */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-cta {
  padding: 9px 20px;
  font-size: 0.87rem;
}

/* ── Theme Toggle ── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-strong);
  background: transparent;
  cursor: pointer;
  color: var(--text-secondary);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), color var(--transition),
              background var(--transition);
}

.theme-toggle:hover {
  border-color: var(--accent-border);
  color: var(--accent);
  background: var(--accent-subtle);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
  position: absolute;
  transition: opacity 0.25s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle .icon-moon { opacity: 1;  transform: rotate(0deg)   scale(1); }
.theme-toggle .icon-sun  { opacity: 0;  transform: rotate(90deg)  scale(0.6); }

[data-theme="light"] .theme-toggle .icon-moon { opacity: 0; transform: rotate(-90deg) scale(0.6); }
[data-theme="light"] .theme-toggle .icon-sun  { opacity: 1; transform: rotate(0deg)   scale(1); }

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

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

/* Background layers */
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.045) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 85% 85% at 50% 40%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 85% 85% at 50% 40%, black 30%, transparent 100%);
}

[data-theme="light"] .hero-grid-bg {
  background-image:
    linear-gradient(rgba(79, 70, 229, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 70, 229, 0.06) 1px, transparent 1px);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero-orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle at center,
    rgba(99, 102, 241, 0.14) 0%,
    rgba(99, 102, 241, 0.05) 45%,
    transparent 70%);
  top: -180px;
  right: -100px;
  filter: blur(40px);
}

.hero-orb-2 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle at center,
    rgba(59, 130, 246, 0.10) 0%,
    transparent 65%);
  bottom: -80px;
  left: 10%;
  filter: blur(50px);
}

/* Hero layout */
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  width: 100%;
}

/* Hero Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.28);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-hover);
  margin-bottom: 28px;
  width: fit-content;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse-dot 2s ease-in-out infinite;
  flex-shrink: 0;
}

/* Hero Title — three-layer typographic stack */
.hero-title {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
}

.hero-name {
  font-size: clamp(2.8rem, 5.5vw, 4.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  background: var(--gradient-name);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-descriptor {
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.2;
}

.hero-stack {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--accent-hover);
  letter-spacing: 0.04em;
  opacity: 0.85;
}

.hero-subtitle {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.72;
  margin-bottom: 34px;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

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

.tech-tag {
  padding: 5px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.77rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-weight: 500;
  transition: border-color var(--transition), color var(--transition);
}

.tech-tag:hover {
  border-color: var(--accent-border);
  color: var(--text-secondary);
}

/* ── Code Window ── */
.code-window {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.code-window-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.28);
  border-bottom: 1px solid var(--border);
}

[data-theme="light"] .code-window-header {
  background: #F1F5F9;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  padding: 0;
  flex-shrink: 0;
  cursor: default;
  transition: opacity 0.15s ease, filter 0.15s ease;
}
.dot-red    { background: #FF5F57; }
.dot-yellow { background: #FEBC2E; }
.dot-green  { background: #28C840; }

/* Clickable dots in the hero window get pointer cursor + hover */
#dot-red, #dot-yellow, #dot-green {
  cursor: pointer;
}
#dot-red:hover    { filter: brightness(1.2); }
#dot-yellow:hover { filter: brightness(1.2); }
#dot-green:hover  { filter: brightness(1.2); }
#dot-red:focus-visible,
#dot-yellow:focus-visible,
#dot-green:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.code-window-title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Code body wrapper — enables minimize / overlay states */
.code-body {
  position: relative;
  overflow: hidden;
  max-height: 600px;
  transition: max-height 0.38s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.28s ease;
}

/* RED — closed overlay */
.code-window-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 12, 20, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 2;
}
.window-closed-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}
.code-window.window-closed .code-window-overlay {
  opacity: 1;
  pointer-events: auto;
}

/* YELLOW — minimised (collapse to title bar) */
.code-window.window-minimized .code-body {
  max-height: 0;
  opacity: 0;
}

.code-block {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.8;
  overflow-x: auto;
  white-space: pre;
  color: var(--text-secondary);
}

/* ── Code Window Modal (GREEN expand) ─────────── */
.code-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 12, 20, 0.80);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
  padding: 24px;
}
.code-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.code-modal-window {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.65), var(--shadow-glow);
  transform: scale(0.95) translateY(10px);
  transition: transform 0.28s cubic-bezier(0.34, 1.46, 0.64, 1);
}
.code-modal-overlay.active .code-modal-window {
  transform: scale(1) translateY(0);
}
.code-modal-header {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  flex-shrink: 0;
}
.modal-close {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 6px;
  display: flex;
  align-items: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  line-height: 1;
}
.modal-close:hover {
  color: var(--text-primary);
  background: rgba(148, 163, 184, 0.10);
}
.modal-editor {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  color: #86EFAC;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.75;
  padding: 24px 28px;
  overflow-y: auto;
  min-height: 340px;
  caret-color: var(--accent);
}
[data-theme="light"] .modal-editor { color: #047857; }

.modal-footer {
  padding: 10px 28px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  flex-shrink: 0;
}
.modal-hint {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  opacity: 0.7;
}

/* Anti-spam honeypot — hidden from real users */
.form-honeypot {
  display: none !important;
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.code-keyword { color: #818CF8; }
.code-type    { color: #67E8F9; }
.code-var     { color: #93C5FD; }
.code-string  { color: #86EFAC; }
.code-comment { color: var(--text-muted); font-style: italic; }

[data-theme="light"] .code-keyword { color: #4F46E5; }
[data-theme="light"] .code-type    { color: #0369A1; }
[data-theme="light"] .code-var     { color: #0891B2; }
[data-theme="light"] .code-string  { color: #047857; }

/* ============================================
   SECTION BASE
   ============================================ */
.section { padding: 100px 0; }

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

.section-header { margin-bottom: 60px; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.18;
  color: var(--text-primary);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-lead {
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.72;
  margin-bottom: 20px;
}

.about-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.82;
  margin-bottom: 16px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.stat-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
}
.stat-number--word {
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.stat-label {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.highlight-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: default;
}

.highlight-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
}

.highlight-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-subtle);
  border-radius: var(--radius-sm);
  color: var(--accent);
}

.highlight-card h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.highlight-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   SKILLS SECTION
   ============================================ */

/* Primary skill row */
.skills-primary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 44px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}

.skill-badge-primary {
  padding: 9px 20px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-mono);
  background: linear-gradient(135deg,
    rgba(99, 102, 241, 0.14) 0%,
    rgba(59, 130, 246, 0.12) 100%);
  border: 1px solid rgba(99, 102, 241, 0.32);
  color: #a5b4fc;
  cursor: default;
}

.skill-badge-primary:hover {
  background: linear-gradient(135deg,
    rgba(99, 102, 241, 0.24) 0%,
    rgba(59, 130, 246, 0.20) 100%);
  border-color: rgba(99, 102, 241, 0.55);
  transform: translateY(-1px);
}

.skill-badge-secondary {
  padding: 9px 20px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  font-family: var(--font-mono);
  background: rgba(148, 163, 184, 0.06);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  cursor: default;
}

.skill-badge-secondary:hover {
  background: var(--accent-subtle);
  border-color: var(--accent-border);
  color: var(--accent-hover);
  transform: translateY(-1px);
}

/* Category grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.skill-category {
  padding: 26px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.skill-category:hover {
  border-color: var(--accent-border);
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.07);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.skill-category-header h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.skill-category-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.frontend-icon   { background: rgba(99, 102, 241, 0.12);  color: #818CF8; }
.backend-icon    { background: rgba(34, 197, 94, 0.10);   color: #4ADE80; }
.automation-icon { background: rgba(251, 191, 36, 0.10);  color: #FCD34D; }
.tools-icon      { background: rgba(248, 113, 113, 0.10); color: #F87171; }

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.skills-ai-note {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(248, 250, 252, 0.02);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-style: italic;
  line-height: 1.6;
}

.skills-ai-note svg {
  flex-shrink: 0;
  color: var(--accent);
  opacity: 0.7;
}

.skill-tag {
  display: inline-block;
  padding: 4px 11px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(248, 250, 252, 0.04);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: default;
}

.skill-tag:hover {
  border-color: var(--accent-border);
  color: var(--accent-hover);
  background: var(--accent-subtle);
}

.skill-tag.skill-primary {
  background: var(--accent-subtle);
  border-color: var(--accent-border);
  color: var(--accent-hover);
  font-weight: 600;
}

/* ============================================
   EXPERIENCE / TIMELINE
   ============================================ */
.timeline {
  position: relative;
  padding-left: 32px;
  max-width: 860px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(
    to bottom,
    rgba(99, 102, 241, 0.6) 0%,
    rgba(99, 102, 241, 0.2) 40%,
    var(--border-strong) 100%
  );
}

.timeline-item {
  position: relative;
  padding-bottom: 48px;
}

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

/* Standard marker */
.timeline-marker {
  position: absolute;
  left: -38px;
  top: 10px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-base);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.22);
}

/* Current-role animated marker */
.timeline-marker-current {
  position: absolute;
  left: -42px;
  top: 6px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  box-shadow: none;
}

.marker-pulse {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  position: relative;
}

.marker-pulse::before {
  content: '';
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.25);
  animation: pulse-ring 2.2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.timeline-content {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.timeline-content:hover {
  border-color: var(--accent-border);
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.06);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.77rem;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* Badge — replaces old timeline-type */
.timeline-badge {
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 0.71rem;
  font-weight: 600;
  font-family: var(--font-mono);
  background: rgba(148, 163, 184, 0.09);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.timeline-badge-current {
  background: rgba(99, 102, 241, 0.14);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.28);
}

.timeline-role {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.timeline-company {
  font-size: 0.83rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  font-family: var(--font-mono);
}

.timeline-achievements {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 20px;
}

.timeline-achievements li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  padding-left: 18px;
  position: relative;
}

.timeline-achievements li::before {
  content: '\2192';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.78rem;
  top: 1px;
}

.timeline-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* Mini Tags (used in timeline + education) */
.mini-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.74rem;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--accent-hover);
}

/* Extra volunteer/mentor roles */
.extra-roles {
  display: flex;
  gap: 14px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.extra-role-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  flex: 1;
  min-width: 260px;
}

.extra-role-card:hover {
  border-color: var(--accent-border);
}

.extra-role-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: var(--accent-subtle);
  border-radius: var(--radius-sm);
  color: var(--accent);
  flex-shrink: 0;
}

.extra-role-title {
  display: block;
  font-size: 0.87rem;
  font-weight: 600;
  color: var(--text-primary);
}

.extra-role-place {
  display: block;
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 2px;
  font-family: var(--font-mono);
}

/* ============================================
   EDUCATION SECTION
   ============================================ */
.education-grid { max-width: 860px; }

.education-card {
  display: flex;
  gap: 28px;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.education-card:hover {
  border-color: var(--accent-border);
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.07);
}

.education-card-left { flex-shrink: 0; }

.education-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-md);
  color: var(--accent);
}

.education-card-right { flex: 1; }

.education-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.education-degree {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.education-school {
  display: inline-block;
  font-size: 0.87rem;
  color: var(--accent-hover);
  font-weight: 600;
  text-decoration: none;
  margin-bottom: 6px;
}

.education-school:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.education-location {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
  opacity: 0.75;
}

.education-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.78;
}

/* ============================================
   SELECTED WORK / NDA SECTION
   ============================================ */

/* Gradient-border wrapper */
.nda-card {
  position: relative;
  border-radius: calc(var(--radius-xl) + 1px);
  padding: 1px;
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.45) 0%,
    rgba(59, 130, 246, 0.20) 50%,
    rgba(139, 92, 246, 0.35) 100%
  );
  max-width: 860px;
}

.nda-card-inner {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 44px 48px;
}

.nda-header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 24px;
}

.nda-icon-wrap {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg,
    rgba(99, 102, 241, 0.15),
    rgba(59, 130, 246, 0.10));
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-md);
  color: var(--accent-hover);
  flex-shrink: 0;
}

.nda-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.nda-subtitle {
  font-size: 0.83rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.nda-body {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.82;
  margin-bottom: 28px;
}

.nda-domains {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 28px;
  padding: 20px;
  background: rgba(99, 102, 241, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.nda-domain {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.nda-domain-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-indigo { background: #6366F1; }
.dot-blue   { background: #3B82F6; }
.dot-purple { background: #8B5CF6; }

.nda-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.nda-coming-soon {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.83rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.nda-coming-soon svg { flex-shrink: 0; color: var(--accent); }

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  align-items: start;
}

.contact-intro {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.82;
  margin-bottom: 28px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-link-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
}

.contact-link-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
}

.contact-link-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-subtle);
  border-radius: var(--radius-sm);
  color: var(--accent);
  flex-shrink: 0;
}

.contact-link-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.contact-link-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-link-value {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.contact-link-arrow {
  color: var(--text-muted);
  transition: color var(--transition), transform var(--transition);
  flex-shrink: 0;
}

.contact-link-card:hover .contact-link-arrow {
  color: var(--accent);
  transform: translate(2px, -2px);
}

/* Contact Form */
.contact-form-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.form-input,
.form-textarea {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 11px 15px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-primary);
  outline: none;
  width: 100%;
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
}

[data-theme="light"] .form-input,
[data-theme="light"] .form-textarea {
  background: #F8FAFC;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

.form-submit {
  width: 100%;
  justify-content: center;
  margin-top: 2px;
}

.form-note {
  font-size: 0.82rem;
  text-align: center;
  color: var(--text-muted);
  min-height: 20px;
  font-family: var(--font-mono);
}

.form-note.success { color: #22c55e; }
[data-theme="light"] .form-note.success { color: #16a34a; }
.form-note.error   { color: #f87171; }
[data-theme="light"] .form-note.error   { color: #dc2626; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 28px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--text-primary);
}

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

.footer-links {
  display: flex;
  gap: 18px;
}

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

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

/* ============================================
   EXPERIENCE — OPTION C (two-column split)
   ============================================ */
.exp-list {
  display: flex;
  flex-direction: column;
  max-width: 920px;
}

.exp-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0 48px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.exp-item:first-child { padding-top: 0; }
.exp-item:last-child  { border-bottom: none; padding-bottom: 0; }

/* Subtle left accent bar on current role */
.exp-item-current::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  border-radius: 2px;
}

/* ── Left column ── */
.exp-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 3px; /* optical alignment with role title */
}

.exp-date {
  font-family: var(--font-mono);
  font-size: 0.77rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.exp-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 0.69rem;
  font-weight: 600;
  font-family: var(--font-mono);
  background: rgba(148, 163, 184, 0.09);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  width: fit-content;
}

.exp-badge-current {
  background: rgba(99, 102, 241, 0.14);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.28);
}

.exp-co {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-mono);
  margin-top: 4px;
}

/* ── Right column ── */
.exp-right {
  display: flex;
  flex-direction: column;
}

.exp-role {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.exp-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 18px;
}

.exp-achievements {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 18px;
}

.exp-achievements li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  padding-left: 18px;
  position: relative;
}

.exp-achievements li::before {
  content: '\2192';
  position: absolute;
  left: 0;
  top: 1px;
  color: var(--accent);
  font-size: 0.78rem;
}

.exp-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 4px;
}

/* ============================================
   RESPONSIVE — 900px
   ============================================ */
@media (max-width: 900px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 44px;
  }

  .hero-badge,
  .hero-subtitle { margin-left: auto; margin-right: auto; }

  .hero-title { align-items: center; }

  .hero-actions   { justify-content: center; }
  .hero-tech-bar  { justify-content: center; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .education-card {
    flex-direction: column;
    gap: 16px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .form-row { grid-template-columns: 1fr; }

  .about-stats { grid-template-columns: repeat(3, 1fr); }

  /* Experience two-column → single column */
  .exp-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 32px 0;
  }

  .exp-item-current::before { display: none; }

  .exp-left {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
  }

  .exp-co { margin-top: 0; width: 100%; }

  .nav-links, .nav-cta { display: none; }

  .hamburger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 62px;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 4px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .nav-links.open .nav-link {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .nda-card-inner { padding: 28px; }

  .nda-domains { gap: 14px; }
}

/* ============================================
   RESPONSIVE — 600px
   ============================================ */
@media (max-width: 600px) {
  .section { padding: 72px 0; }

  .hero { padding: 80px 0 60px; }

  .timeline { padding-left: 22px; }

  .timeline-marker        { left: -28px; }
  .timeline-marker-current { left: -32px; }

  .contact-form-wrapper { padding: 22px; }

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .footer-copy { margin-left: 0; }

  .about-stats { grid-template-columns: 1fr 1fr; }

  .extra-roles { flex-direction: column; }

  .nda-footer-row { flex-direction: column; align-items: flex-start; }

  .nda-card-inner { padding: 24px; }

  .skills-primary { gap: 8px; }

  .skill-badge-primary,
  .skill-badge-secondary { padding: 8px 14px; font-size: 0.82rem; }
}