/* ══════════════════════════════════════════════════════════
   style.css — divakar.ca
   Cybersecurity personal brand: deep navy, cyan accent,
   violet secondary, glassmorphism panels, console aesthetic
   ══════════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ──────────────────────────────────────── */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3.5rem,   1.5rem  + 5vw,    7rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:  cubic-bezier(0.4, 0, 1, 1);

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;

  /* Layout */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1200px;
  --nav-height: 4rem;
}

/* ── DARK MODE ── */
[data-theme="dark"] {
  /* Backgrounds */
  --color-bg:             #080c14;
  --color-surface:        #0d1220;
  --color-surface-2:      #111827;
  --color-surface-3:      #161e30;
  --color-surface-offset: #0f1520;
  --color-divider:        rgba(0, 200, 212, 0.08);
  --color-border:         rgba(0, 200, 212, 0.15);
  --color-border-subtle:  rgba(255, 255, 255, 0.06);

  /* Text */
  --color-text:           #d8dde8;
  --color-text-muted:     #7a8499;
  --color-text-faint:     #3d4557;
  --color-text-inverse:   #080c14;

  /* Accent — Cyan / Electric Blue */
  --color-accent:         #00c8d4;
  --color-accent-hover:   #00e0ee;
  --color-accent-active:  #009aa4;
  --color-accent-subtle:  rgba(0, 200, 212, 0.35);
  --color-accent-glow:    rgba(0, 200, 212, 0.12);
  --color-accent-dim:     rgba(0, 200, 212, 0.06);

  /* Secondary — Violet */
  --color-secondary:      #8b5cf6;
  --color-secondary-subtle: rgba(139, 92, 246, 0.2);

  /* Success / Active */
  --color-active:         #22d3a4;
  --color-active-subtle:  rgba(34, 211, 164, 0.15);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
  --shadow-accent: 0 0 24px rgba(0, 200, 212, 0.15);

  /* Glass */
  --glass-bg: rgba(13, 18, 32, 0.7);
  --glass-border: rgba(0, 200, 212, 0.12);
}

/* ── LIGHT MODE ───────────────────────────────────────── */
:root:not([data-theme="dark"]), [data-theme="light"] {
  --color-bg:             #f4f6fa;
  --color-surface:        #ffffff;
  --color-surface-2:      #f8f9fc;
  --color-surface-3:      #eef1f8;
  --color-surface-offset: #edf0f7;
  --color-divider:        rgba(0, 130, 150, 0.1);
  --color-border:         rgba(0, 120, 140, 0.18);
  --color-border-subtle:  rgba(0, 0, 0, 0.07);

  --color-text:           #0f1929;
  --color-text-muted:     #526078;
  --color-text-faint:     #a0aec0;
  --color-text-inverse:   #f4f6fa;

  --color-accent:         #007a85;
  --color-accent-hover:   #00909d;
  --color-accent-active:  #005f68;
  --color-accent-subtle:  rgba(0, 122, 133, 0.3);
  --color-accent-glow:    rgba(0, 122, 133, 0.1);
  --color-accent-dim:     rgba(0, 122, 133, 0.05);

  --color-secondary:      #6d28d9;
  --color-secondary-subtle: rgba(109, 40, 217, 0.15);

  --color-active:         #059669;
  --color-active-subtle:  rgba(5, 150, 105, 0.12);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
  --shadow-accent: 0 0 20px rgba(0, 122, 133, 0.12);

  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(0, 122, 133, 0.12);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --color-bg:             #f4f6fa;
    --color-surface:        #ffffff;
    --color-surface-2:      #f8f9fc;
    --color-surface-3:      #eef1f8;
    --color-surface-offset: #edf0f7;
    --color-divider:        rgba(0, 130, 150, 0.1);
    --color-border:         rgba(0, 120, 140, 0.18);
    --color-border-subtle:  rgba(0, 0, 0, 0.07);
    --color-text:           #0f1929;
    --color-text-muted:     #526078;
    --color-text-faint:     #a0aec0;
    --color-text-inverse:   #f4f6fa;
    --color-accent:         #007a85;
    --color-accent-hover:   #00909d;
    --color-accent-active:  #005f68;
    --color-accent-subtle:  rgba(0, 122, 133, 0.3);
    --color-accent-glow:    rgba(0, 122, 133, 0.1);
    --color-accent-dim:     rgba(0, 122, 133, 0.05);
    --color-secondary:      #6d28d9;
    --color-secondary-subtle: rgba(109, 40, 217, 0.15);
    --color-active:         #059669;
    --color-active-subtle:  rgba(5, 150, 105, 0.12);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
    --shadow-accent: 0 0 20px rgba(0, 122, 133, 0.12);
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(0, 122, 133, 0.12);
  }
}

/* ── LAYOUT UTILITIES ──────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

.section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}

/* ── TYPOGRAPHY ────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h2 {
  font-size: var(--text-2xl);
  margin-block-end: var(--space-6);
  line-height: 1.1;
}

h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-block-end: var(--space-3);
}

p {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-block-end: var(--space-4);
}

p:last-child { margin-block-end: 0; }

.section-label {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-block-end: var(--space-3);
}

.section-intro {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 68ch;
  margin-block-end: var(--space-12);
  line-height: 1.7;
}

/* ── BUTTONS ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.7em 1.5em;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  border: 1.5px solid var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: var(--shadow-accent);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}
.btn-ghost:active { transform: translateY(0); }

/* ── NAVIGATION ────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  transition:
    background var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.site-nav.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  height: var(--nav-height);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo svg { flex-shrink: 0; }
.nav-wordmark {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.01em;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-accent);
  transition: width var(--transition-interactive);
}
.nav-links a:hover { color: var(--color-text); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--color-text); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-accent);
  background: var(--color-accent-dim);
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
.nav-mobile-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--transition-interactive), opacity var(--transition-interactive);
}
.nav-mobile-toggle:hover { background: var(--color-accent-dim); color: var(--color-accent); }

/* Mobile menu open state */
.nav-mobile-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-mobile-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-mobile-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  border-top: 1px solid var(--color-border-subtle);
}
.mobile-menu.open { display: block; }
.mobile-menu nav {
  display: flex;
  flex-direction: column;
  padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16));
  gap: var(--space-1);
}
.mobile-menu nav a {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  transition: color var(--transition-interactive);
}
.mobile-menu nav a:last-child { border-bottom: none; }
.mobile-menu nav a:hover { color: var(--color-accent); }

/* ── HERO ──────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* Grid background */
.hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-divider) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
}

/* Floating network nodes */
.hero-nodes { position: absolute; inset: 0; }
.node {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0.4;
  animation: nodeFloat 8s ease-in-out infinite;
}
.node-1 { top: 20%; left: 15%; animation-delay: 0s; }
.node-2 { top: 35%; right: 20%; animation-delay: 1.5s; }
.node-3 { top: 65%; left: 25%; animation-delay: 3s; }
.node-4 { top: 75%; right: 30%; animation-delay: 2s; }
.node-5 { top: 45%; left: 60%; animation-delay: 4s; }

@keyframes nodeFloat {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.4; }
  50% { transform: translateY(-12px) scale(1.3); opacity: 0.7; }
}

/* Pulse rings */
.pulse-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--color-accent);
  opacity: 0;
  animation: pulseRing 6s ease-out infinite;
}
.pulse-ring-1 {
  width: 300px; height: 300px;
  top: 20%; right: 10%;
  animation-delay: 0s;
}
.pulse-ring-2 {
  width: 200px; height: 200px;
  bottom: 25%; left: 8%;
  animation-delay: 3s;
}
@keyframes pulseRing {
  0% { transform: scale(0.8); opacity: 0.4; }
  100% { transform: scale(1.8); opacity: 0; }
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-block: clamp(var(--space-20), 12vw, var(--space-32));
  padding-block-start: calc(var(--nav-height) + clamp(var(--space-16), 8vw, var(--space-24)));
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4em 0.9em;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-accent-dim);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  margin-block-end: var(--space-8);
}
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-active);
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-name {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--color-text);
  margin-block-end: var(--space-6);
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.025em;
  line-height: 1.2;
  max-width: 22ch;
  margin-block-end: var(--space-6);
  -webkit-text-fill-color: var(--color-text);
}

.hero-sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: 1.7;
  margin-block-end: var(--space-10);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-block-end: var(--space-16);
}

/* Status bar */
.hero-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  width: fit-content;
  max-width: 100%;
}

.status-item {
  display: flex;
  flex-direction: column;
  gap: 0.15em;
}
.status-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.status-value {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.status-value.active { color: var(--color-active); }
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-active);
  animation: blink 2.5s ease-in-out infinite;
}
.status-divider {
  width: 1px;
  height: 30px;
  background: var(--color-border);
}

.break-lg { display: none; }
@media (min-width: 768px) { .break-lg { display: block; } }

/* ── FADE IN ANIMATIONS ────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.45s; }

/* Scroll reveal for sections */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── ABOUT ─────────────────────────────────────────────── */
.about-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: clamp(var(--space-12), 6vw, var(--space-20));
  align-items: start;
}

.about-text h2 {
  margin-block-end: var(--space-8);
}

.about-text p {
  font-size: var(--text-base);
  margin-block-end: var(--space-5);
}

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  padding-block-start: var(--space-2);
}

.about-mark {
  display: flex;
  justify-content: center;
  opacity: 0.85;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--glass-bg);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.2em;
  padding-block-end: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.stat-item:last-child { border-bottom: none; padding-block-end: 0; }

.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.03em;
}
.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
  line-height: 1.4;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 0.3em 0.8em;
  border-radius: var(--radius-full);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-accent-subtle);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

/* ── EXPERIENCE ────────────────────────────────────────── */
.experience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.exp-card {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
  position: relative;
  overflow: hidden;
}
.exp-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
  opacity: 0;
  transition: opacity var(--transition-interactive);
}
.exp-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-accent);
  transform: translateY(-2px);
}
.exp-card:hover::before { opacity: 1; }

.exp-card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-block-end: var(--space-5);
}

.exp-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border-radius: var(--radius-lg);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border);
}

.exp-card h3 {
  font-size: var(--text-lg);
  margin-block-end: var(--space-1);
}

.exp-platform-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.exp-card p {
  font-size: var(--text-sm);
  line-height: 1.7;
}

.exp-responsibilities {
  list-style: none;
  margin-block-start: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.exp-responsibilities li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-inline-start: var(--space-5);
  position: relative;
  max-width: none;
}
.exp-responsibilities li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-subtle);
  border: 1.5px solid var(--color-accent);
}

/* ── PROJECTS ──────────────────────────────────────────── */
.projects-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.project-card {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
.project-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-accent);
  transform: translateY(-2px);
}

.project-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: var(--space-4);
}

.project-number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-text-faint);
  letter-spacing: -0.04em;
  line-height: 1;
}

.project-tag {
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 0.3em 0.8em;
  border-radius: var(--radius-full);
  background: var(--color-secondary-subtle);
  color: var(--color-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.project-card h3 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-block-end: var(--space-6);
  color: var(--color-text);
  line-height: 1.3;
}

.case-study-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.cs-section {}

.cs-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-block-end: var(--space-2);
}

.cs-section p {
  font-size: var(--text-xs);
  line-height: 1.6;
  margin-block-end: 0;
}

.cs-tools {}
.cs-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.cs-tags span {
  font-size: 11px;
  font-weight: 600;
  padding: 0.25em 0.65em;
  border-radius: var(--radius-sm);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

/* ── CURRENT FOCUS ─────────────────────────────────────── */
.focus-section {
  position: relative;
  overflow: hidden;
}
.focus-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.focus-inner {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-20));
  align-items: start;
}

.focus-text h2 { margin-block-end: var(--space-6); }
.focus-text p { font-size: var(--text-base); }

.focus-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.focus-item {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition:
    border-color var(--transition-interactive),
    background var(--transition-interactive),
    transform var(--transition-interactive);
}
.focus-item:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
  transform: translateX(4px);
}

.focus-item-icon {
  display: flex;
  align-items: flex-start;
  padding-block-start: 0.15em;
  flex-shrink: 0;
}

.focus-item strong {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-block-end: var(--space-2);
}
.focus-item p {
  font-size: var(--text-xs);
  line-height: 1.6;
  margin: 0;
}

/* ── TIMELINE ──────────────────────────────────────────── */
.timeline-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.timeline-section h2 { margin-block-end: var(--space-12); }

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: var(--space-6);
  padding-block-end: var(--space-10);
}
.timeline-item:last-child { padding-block-end: 0; }

.timeline-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-block-start: 0.25em;
}

.timeline-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-surface-3);
  border: 2px solid var(--color-border);
  flex-shrink: 0;
  z-index: 1;
}
.timeline-dot-accent {
  background: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent-glow);
}
.timeline-dot-current {
  position: relative;
  background: var(--color-accent);
  border-color: var(--color-accent);
  width: 16px;
  height: 16px;
}
.dot-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1.5px solid var(--color-accent);
  opacity: 0;
  animation: pulseRing 2.5s ease-out infinite;
}

.timeline-connector {
  flex: 1;
  width: 1.5px;
  background: var(--color-border);
  margin-block: var(--space-2);
}
.timeline-item:last-child .timeline-connector { display: none; }

.timeline-content {
  padding-block-start: 0.05em;
}

.timeline-period {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-block-end: var(--space-2);
}

.timeline-content h3 {
  font-size: var(--text-lg);
  margin-block-end: var(--space-3);
}

.timeline-content p {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin-block-end: var(--space-4);
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.timeline-tags span {
  font-size: 11px;
  font-weight: 600;
  padding: 0.25em 0.7em;
  border-radius: var(--radius-sm);
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.timeline-item-current .timeline-content h3 {
  color: var(--color-accent);
}

/* ── SKILLS ────────────────────────────────────────────── */
.skills-section h2 { margin-block-end: var(--space-12); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.skills-group {
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.skills-group:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 16px var(--color-accent-dim);
}

.skills-group h3 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-block-end: var(--space-4);
  padding-block-end: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  letter-spacing: 0.01em;
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.skills-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: none;
}

.skill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
  opacity: 0.7;
}

/* ── CONTACT ───────────────────────────────────────────── */
.contact-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 440px;
  gap: clamp(var(--space-12), 6vw, var(--space-20));
  align-items: start;
}

.contact-text h2 { margin-block-end: var(--space-6); }
.contact-text p { font-size: var(--text-base); line-height: 1.7; }

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  text-decoration: none;
  transition:
    border-color var(--transition-interactive),
    background var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
.contact-link:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
  box-shadow: var(--shadow-accent);
  transform: translateX(4px);
}

.contact-link-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-accent);
}

.contact-link > div:nth-child(2) {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.2em;
}

.contact-link-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.contact-link-value {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.contact-link-arrow {
  color: var(--color-text-faint);
  transition: color var(--transition-interactive), transform var(--transition-interactive);
}
.contact-link:hover .contact-link-arrow {
  color: var(--color-accent);
  transform: translateX(3px);
}

/* ── SEO BLOCK ───────────────────────────────────── */
/* Visible to search crawlers and AI; visually subdued, not hidden */
.seo-block {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
}
.seo-block h2 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  margin-block-end: var(--space-4);
  letter-spacing: 0.01em;
  line-height: 1.4;
}
.seo-block p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.7;
  margin-block-end: var(--space-3);
  max-width: 90ch;
}
.seo-block strong { color: var(--color-text-muted); font-weight: 600; }
.seo-block a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}
.seo-block a:hover { text-decoration: underline; }

/* ── FOOTER ────────────────────────────────────────────── */
.site-footer {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-bg);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: var(--space-8);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer-name {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.footer-tagline {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.02em;
}

.footer-links {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}
.footer-links a {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer-links a:hover { color: var(--color-accent); }

.footer-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-1);
}
.footer-copy span {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer-domain {
  font-weight: 600;
  color: var(--color-accent) !important;
}

/* ── RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 1100px) {
  .projects-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-sidebar {
    order: -1;
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-6);
  }
  .about-mark { display: none; }
  .about-stats { flex: 1; min-width: 240px; }
  .about-tags { width: 100%; }

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

  .focus-inner {
    grid-template-columns: 1fr;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .footer-copy { align-items: flex-start; }
}

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

  .hero-headline { font-size: var(--text-xl); max-width: none; }

  .hero-status {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
  .status-divider { display: none; }

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

  .footer-links { flex-wrap: wrap; gap: var(--space-4); }
}

@media (max-width: 480px) {
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .exp-card { padding: var(--space-6); }
  .project-card { padding: var(--space-6); }
}