/* ============================================
   1. CSS Custom Properties
   ============================================ */
:root {
  /* Colors */
  --color-bg:            #0f172a;
  --color-surface:       #1e293b;
  --color-surface-2:     #273549;
  --color-border:        #334155;
  --color-accent:        #60a5fa;
  --color-accent-dim:    #3b82f6;
  --color-accent-glow:   rgba(96, 165, 250, 0.12);
  --color-secondary:     #a78bfa;
  --color-secondary-glow: rgba(167, 139, 250, 0.12);
  --color-text:          #e2e8f0;
  --color-text-muted:    #94a3b8;
  --color-text-faint:    #475569;
  --color-danger:        #f87171;
  --color-warning:       #fbbf24;
  --color-success:       #4ade80;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui,
               Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo,
               Courier, monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.25rem;
  --text-xl:   1.563rem;
  --text-2xl:  1.953rem;
  --text-3xl:  2.441rem;
  --text-4xl:  3rem;

  --weight-normal:   400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;

  --leading-tight:   1.25;
  --leading-normal:  1.5;
  --leading-relaxed: 1.7;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Misc */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-full: 9999px;
  --max-width:   1100px;
  --nav-height:  64px;
  --transition:  200ms ease;
}

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

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

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-secondary);
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

/* ============================================
   3. Layout Utilities
   ============================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

section {
  padding-block: var(--space-24);
  scroll-margin-top: var(--nav-height);
}

/* ============================================
   4. Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--color-accent);
  color: #0f172a;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-dim);
  border-color: var(--color-accent-dim);
  color: #0f172a;
  box-shadow: 0 0 16px var(--color-accent-glow);
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn--outline:hover {
  background: var(--color-accent-glow);
  color: var(--color-accent);
  box-shadow: 0 0 16px var(--color-accent-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.btn--sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--text-xs);
}

/* ============================================
   5. Tags / Pills
   ============================================ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.tag--accent {
  background: var(--color-accent-glow);
  border-color: rgba(96, 165, 250, 0.3);
  color: var(--color-accent);
}

.tag--purple {
  background: var(--color-secondary-glow);
  border-color: rgba(167, 139, 250, 0.3);
  color: var(--color-secondary);
}

.tag--danger {
  background: rgba(248, 113, 113, 0.1);
  border-color: rgba(248, 113, 113, 0.3);
  color: var(--color-danger);
}

.tag--success {
  background: rgba(74, 222, 128, 0.1);
  border-color: rgba(74, 222, 128, 0.3);
  color: var(--color-success);
}

/* ============================================
   6. Section Heading
   ============================================ */
.section-heading {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-12);
}

.section-heading::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--color-border), transparent);
}

.section-heading__prefix {
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: var(--weight-normal);
}

/* ============================================
   7. Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition);
}

.nav__logo:hover {
  color: var(--color-accent);
}

.nav__logo-prompt {
  color: var(--color-accent);
}

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

.nav__link {
  position: relative;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
  border-radius: var(--radius-full);
}

.nav__link:hover {
  color: var(--color-accent);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__link--cta {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background: var(--color-accent-glow);
  color: var(--color-accent);
  box-shadow: 0 0 12px var(--color-accent-glow);
}

/* ============================================
   8. Hero
   ============================================ */
.section-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-block: 0;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(96, 165, 250, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(96, 165, 250, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent);
  pointer-events: none;
}

.hero__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-8);
  padding-block: var(--space-16);
  position: relative;
  z-index: 1;
}

/* Terminal component */
.terminal {
  width: 100%;
  max-width: 640px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(96, 165, 250, 0.05),
    0 24px 64px rgba(0, 0, 0, 0.5);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
}

.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal__dot--red    { background: #ff5f57; }
.terminal__dot--yellow { background: #febc2e; }
.terminal__dot--green  { background: #28c840; }

.terminal__title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.terminal__body {
  padding: var(--space-4) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.terminal__line {
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.terminal__prompt {
  color: var(--color-success);
}

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

.terminal__output {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-left: var(--space-2);
  border-left: 2px solid var(--color-border);
  margin-left: var(--space-2);
}

/* Typewriter effect on hero name */
.hero__name {
  display: block;
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-accent);
  overflow: hidden;
  white-space: nowrap;
  width: 0;
  border-right: 2px solid var(--color-accent);
}

.hero__role {
  display: block;
  font-size: var(--text-lg);
  color: var(--color-text);
  font-weight: var(--weight-medium);
  overflow: hidden;
  white-space: nowrap;
  width: 0;
  opacity: 0;
}

.hero__tagline {
  display: block;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  overflow: hidden;
  white-space: nowrap;
  width: 0;
  opacity: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .hero__name {
    animation:
      typewriter-name 1.2s steps(18, end) 0.6s forwards,
      blink-cursor 0.75s step-end 0.6s 2;
  }

  .hero__role {
    animation:
      typewriter-role 1s steps(22, end) 2.1s forwards,
      fade-in 0s 2.1s forwards;
  }

  .hero__tagline {
    animation:
      typewriter-tag 1.2s steps(40, end) 3.3s forwards,
      fade-in 0s 3.3s forwards;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__name,
  .hero__role,
  .hero__tagline {
    width: 100%;
    opacity: 1;
    border-right: none;
  }
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.hero__scroll-arrow {
  display: block;
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--color-text-faint);
  border-bottom: 2px solid var(--color-text-faint);
  transform: rotate(45deg);
  animation: bounce 2s ease-in-out infinite;
}

/* ============================================
   9. About
   ============================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.about__bio {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
}

.about__bio p + p {
  margin-top: var(--space-4);
}

.about__stats {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  font-family: var(--font-mono);
}

.about__stats-header {
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.about__stat {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.about__stat:last-child {
  border-bottom: none;
}

.about__stat-value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-accent);
  line-height: 1;
}

.about__stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============================================
   10. Skills
   ============================================ */
.section-skills {
  background: rgba(30, 41, 59, 0.3);
}

/* Per-category color tokens */
.skills__category[data-category="cloud"]        { --cat-color: #60a5fa; }
.skills__category[data-category="security"]     { --cat-color: #f87171; }
.skills__category[data-category="cicd"]         { --cat-color: #4ade80; }
.skills__category[data-category="observability"]{ --cat-color: #fbbf24; }
.skills__category[data-category="languages"]    { --cat-color: #a78bfa; }
.skills__category[data-category="os"]           { --cat-color: #94a3b8; }

.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.skills__category {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--transition);
}

.skills__category:hover {
  border-color: color-mix(in srgb, var(--cat-color) 40%, transparent);
}

.skills__category-title {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--cat-color);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid color-mix(in srgb, var(--cat-color) 20%, transparent);
}

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

.skill-pill {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  cursor: default;
  transition:
    border-color var(--transition),
    background var(--transition),
    color var(--transition),
    transform var(--transition);
}

.skill-pill:hover {
  border-color: var(--cat-color);
  background: color-mix(in srgb, var(--cat-color) 10%, transparent);
  color: var(--cat-color);
  transform: translateY(-2px);
}

/* ============================================
   11. Experience / Timeline
   ============================================ */
.timeline {
  position: relative;
  padding-left: var(--space-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--color-accent),
    var(--color-border) 85%,
    transparent
  );
  border-radius: var(--radius-full);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-12);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__marker {
  position: absolute;
  left: calc(-1 * var(--space-8) + 0px);
  top: var(--space-6);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent-glow), 0 0 4px var(--color-accent);
  border: 2px solid var(--color-bg);
}

.timeline__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--transition);
}

.timeline__card:hover {
  border-color: rgba(96, 165, 250, 0.3);
}

.timeline__card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.timeline__role {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.timeline__company {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.timeline__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  padding-top: var(--space-1);
}

.timeline__bullets {
  list-style: none;
  margin-bottom: var(--space-4);
}

.timeline__bullets li {
  position: relative;
  padding-left: var(--space-6);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-2);
}

.timeline__bullets li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

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

/* ============================================
   12. Projects
   ============================================ */
.section-projects {
  background: rgba(30, 41, 59, 0.3);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-6);
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
}

.project-card:hover {
  border-color: var(--color-accent);
  box-shadow:
    0 0 0 1px var(--color-accent-glow),
    0 12px 40px rgba(0, 0, 0, 0.4);
  transform: translateY(-4px);
}

.project-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: linear-gradient(
    135deg,
    rgba(96, 165, 250, 0.06),
    transparent 60%
  );
  border-bottom: 1px solid var(--color-border);
}

.project-card__icon {
  color: var(--color-accent);
  opacity: 0.7;
}

.project-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  gap: var(--space-4);
}

.project-card__title {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

.project-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  flex: 1;
}

.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.project-card__links {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
}

/* ============================================
   13. Certifications
   ============================================ */
.certs__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-6);
}

.cert-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--cert-color, var(--color-accent));
  padding: var(--space-6);
  transition:
    box-shadow var(--transition),
    transform var(--transition);
}

.cert-card:hover {
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

/* Per-issuer brand colors */
.cert-card[data-issuer="aws"]       { --cert-color: #ff9900; }
.cert-card[data-issuer="gcp"]       { --cert-color: #4285f4; }
.cert-card[data-issuer="azure"]     { --cert-color: #0078d4; }
.cert-card[data-issuer="hashicorp"] { --cert-color: #7b42bc; }
.cert-card[data-issuer="cncf"]      { --cert-color: #326ce5; }
.cert-card[data-issuer="comptia"]   { --cert-color: #e2251e; }
.cert-card[data-issuer="redhat"]    { --cert-color: #cc0000; }
.cert-card[data-issuer="other"]     { --cert-color: #60a5fa; }

.cert-card__issuer {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--cert-color, var(--color-accent));
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.cert-card__name {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-3);
  line-height: var(--leading-tight);
}

.cert-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-4);
}

.cert-card__year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.cert-card__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-success);
}

.cert-card__badge::before {
  content: '✓';
  font-weight: var(--weight-bold);
}

/* ============================================
   14. Contact
   ============================================ */
.section-contact {
  text-align: center;
  background: rgba(30, 41, 59, 0.3);
}

.contact__tagline {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-12);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.contact__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: 480px;
  margin-inline: auto;
}

.contact__link-item {
  width: 100%;
}

.contact__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition:
    border-color var(--transition),
    background var(--transition),
    color var(--transition),
    transform var(--transition);
}

.contact__link:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-glow);
  color: var(--color-text);
  transform: translateX(4px);
}

.contact__prompt {
  color: var(--color-success);
  font-weight: var(--weight-bold);
  min-width: 1ch;
}

.contact__cmd {
  color: var(--color-accent);
  min-width: 5ch;
}

.contact__value {
  color: var(--color-text-muted);
}

.contact__link:hover .contact__value {
  color: var(--color-text);
}

/* ============================================
   15. Footer
   ============================================ */
.footer {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer__text {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__text a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

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

/* ============================================
   16. Animations & Keyframes
   ============================================ */
@keyframes typewriter-name {
  from { width: 0; }
  to   { width: 100%; }
}

@keyframes typewriter-role {
  from { width: 0; }
  to   { width: 100%; }
}

@keyframes typewriter-tag {
  from { width: 0; }
  to   { width: 100%; }
}

@keyframes clip-reveal-tag {
  from { clip-path: inset(0 100% 0 0); }
  to   { clip-path: inset(0 0% 0 0); }
}

@keyframes blink-cursor {
  from, to { border-color: transparent; }
  50%      { border-color: var(--color-accent); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50%       { transform: rotate(45deg) translateY(6px); }
}

/* Scroll-driven entrance animations */
@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .timeline__item,
    .project-card,
    .cert-card,
    .skills__category {
      opacity: 0;
      transform: translateY(24px);
      animation: entrance 0.5s ease forwards;
      animation-timeline: view();
      animation-range: entry 0% entry 25%;
    }
  }
}

@keyframes entrance {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   17. Media Queries
   ============================================ */
@media (max-width: 768px) {
  :root {
    --space-24: 4rem;
  }

  .nav__links {
    display: none;
  }

  .hero__content {
    padding-block: var(--space-12);
  }

  .terminal {
    max-width: 100%;
  }

  .terminal__body {
    font-size: var(--text-xs);
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .timeline {
    padding-left: var(--space-6);
  }

  .timeline__card-header {
    flex-direction: column;
  }

  .section-heading {
    font-size: var(--text-lg);
  }

  .hero__actions {
    gap: var(--space-3);
  }

  .btn {
    padding: 0.5rem 1rem;
  }

  .contact__link {
    padding: var(--space-3) var(--space-4);
  }
}

@media (max-width: 480px) {
  .hero__name {
    font-size: var(--text-xl);
  }

  .hero__role {
    font-size: var(--text-base);
  }

  .projects__grid,
  .certs__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) and (prefers-reduced-motion: no-preference) {
  .hero__tagline {
    white-space: normal;
    width: 100%;
    animation: fade-in 0s 3.3s forwards;
  }

  .hero__tagline__l1,
  .hero__tagline__l2 {
    display: block;
    clip-path: inset(0 100% 0 0);
    opacity: 0;
  }

  .hero__tagline__l1 {
    animation:
      clip-reveal-tag 0.65s steps(19, end) 3.3s forwards,
      fade-in 0s 3.3s forwards;
  }

  .hero__tagline__l2 {
    animation:
      clip-reveal-tag 0.55s steps(16, end) 3.95s forwards,
      fade-in 0s 3.95s forwards;
  }
}