/* ============================================================================
   styles.css — Athanasios "Sakis" Maznis · personal CV
   Order: fonts note → reset → tokens → base → layout → components → utilities
          → themes → motion → (print lives in print.css)
   ============================================================================ */

/* ----------------------------------------------------------------------------
   @font-face
   Fonts are loaded via the Google Fonts <link> in index.html, so no @font-face
   blocks are required here. Fallback stacks are declared in the tokens below.
   ---------------------------------------------------------------------------- */

/* ============================================================================
   RESET
   ============================================================================ */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100svh;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

input, button, textarea, select { font: inherit; }

h1, h2, h3, h4 { line-height: 1.1; font-weight: 600; }

p, h1, h2, h3, h4 { overflow-wrap: break-word; }

ul, ol { list-style: none; padding: 0; }

/* ============================================================================
   @property — enables the animated conic-gradient cert border
   ============================================================================ */
@property --angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

/* ============================================================================
   TOKENS — dark theme is the default
   ============================================================================ */
:root {
  /* color — dark (default) */
  --bg:            #0B0E14;
  --bg-elevated:   #131824;
  --bg-inset:      #090C12;
  --border:        #1F2733;
  --border-strong: #2E3B4D;

  --text:          #E6EDF3;
  --text-muted:    #8B97A8;
  --text-faint:    #55606F;

  --accent:        #FF5C35;
  --accent-soft:   #FF8A66;
  --accent-glow:   rgba(255, 92, 53, 0.18);
  --on-accent:     #0B0E14;

  --cyan:          #46D9E8;
  --cyan-glow:     rgba(70, 217, 232, 0.14);
  --lime:          #A8E063;
  --amber:         #F5C451;
  --rose:          #F2637E;
  --violet:        #A78BFA;
  --violet-glow:   rgba(167, 139, 250, 0.12);

  /* radius */
  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 20px;

  /* elevation */
  --shadow-1:    0 1px 2px rgba(0, 0, 0, .4);
  --shadow-2:    0 8px 24px -8px rgba(0, 0, 0, .6);
  --shadow-glow: 0 0 0 1px var(--accent), 0 8px 32px -8px var(--accent-glow);

  /* type */
  --font-display: "Space Grotesk", "Bricolage Grotesque", Inter, system-ui, sans-serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono:    "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --fs-hero:  clamp(2.75rem, 8vw, 6rem);
  --fs-h2:    clamp(1.75rem, 4vw, 2.75rem);
  --fs-h3:    clamp(1.15rem, 2vw, 1.4rem);
  --fs-body:  clamp(0.95rem, 1.1vw, 1.05rem);
  --fs-meta:  0.8125rem;
  --fs-micro: 0.75rem; /* bumped from spec's 0.6875rem to honor the "no text below 12px" rule */

  /* spacing scale (8px) */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;
  --sp-10: 128px;

  color-scheme: dark;
}

/* ============================================================================
   BASE
   ============================================================================ */
body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  color: var(--text);
  background-color: var(--bg);
}

a {
  color: var(--cyan);
  text-decoration: none;
}
a:hover { text-decoration: underline; text-decoration-color: var(--accent); }

::selection { background: var(--accent); color: var(--on-accent); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ============================================================================
   LAYOUT
   ============================================================================ */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--sp-9) var(--sp-5);
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: var(--sp-6);
  border-top: 2px solid var(--border-strong);
}

.section__rail {
  position: sticky;
  top: var(--sp-7);
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding-top: var(--sp-1);
}

.section__num {
  font-family: var(--font-mono);
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--accent);
}

.section__label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-faint);
}

.section__line {
  width: 2px;
  height: 120px;
  background: var(--border-strong);
  margin-top: var(--sp-3);
}

.section__body {
  min-width: 0;
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-6);
}

.section__count {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  font-weight: 400;
  color: var(--text-faint);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--text-faint);
  margin-bottom: var(--sp-2);
}

/* ============================================================================
   UTILITIES
   ============================================================================ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -60px;
  left: var(--sp-4);
  z-index: 1000;
  background: var(--accent);
  color: var(--on-accent);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  transition: top .18s cubic-bezier(.22, 1, .36, 1);
}
.skip-link:focus {
  top: var(--sp-4);
  outline-offset: 3px;
}

/* ============================================================================
   COMPONENTS — header / nav
   ============================================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--sp-3) var(--sp-5);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  display: inline-flex;
  align-items: center;
}
.brand:hover { text-decoration: none; }
.brand__mark { color: var(--accent); }
.brand__cursor {
  color: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.nav__link {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
}
.nav__link:hover { color: var(--accent); text-decoration: none; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elevated);
  color: var(--text-muted);
  cursor: pointer;
  transition: color .18s cubic-bezier(.22, 1, .36, 1),
              border-color .18s cubic-bezier(.22, 1, .36, 1),
              transform .18s cubic-bezier(.22, 1, .36, 1);
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.theme-toggle__icon--sun { display: none; }
.theme-toggle__icon--moon { display: inline-flex; }

/* ============================================================================
   COMPONENTS — hero
   ============================================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero__mesh {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(45% 55% at 18% 28%, var(--accent-glow), transparent 60%),
    radial-gradient(38% 48% at 82% 18%, var(--cyan-glow), transparent 62%),
    radial-gradient(42% 52% at 62% 82%, var(--violet-glow), transparent 62%);
  filter: blur(30px);
  animation: mesh-drift 22s ease-in-out infinite alternate;
}

.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: radial-gradient(circle at 1px 1px, var(--border) 1px, transparent 0);
  background-size: 30px 30px;
  opacity: .35;
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 0%, transparent 70%);
  mask-image: radial-gradient(ellipse at 50% 40%, #000 0%, transparent 70%);
}

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--sp-9) var(--sp-5) var(--sp-8);
}

.hero__name {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.95;
  color: var(--text);
}
.hero__name-line { display: block; }

.hero__title {
  font-family: var(--font-mono);
  font-size: var(--fs-h3);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-top: var(--sp-4);
}

.terminal {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
  margin-top: var(--sp-5);
}
.terminal__prompt { color: var(--cyan); }
.terminal__cmd { color: var(--text); }
.terminal__output { color: var(--accent-soft); }
.terminal__arrow { color: var(--accent); margin-right: var(--sp-2); }
.terminal__cursor {
  display: inline-block;
  width: 9px;
  height: 1.05em;
  margin-left: 4px;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  margin-top: var(--sp-5);
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
}
.hero__meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}
.hero__meta-item svg { color: var(--accent); flex-shrink: 0; }

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
}

.hero__scroll {
  position: absolute;
  bottom: var(--sp-5);
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 40px;
  border: 2px solid var(--border-strong);
  border-radius: 999px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
  z-index: 2;
}
.hero__scroll:hover { border-color: var(--accent); text-decoration: none; }
.hero__scroll-line {
  width: 2px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: bob 1.6s ease-in-out infinite;
}

/* ============================================================================
   COMPONENTS — buttons
   ============================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 12px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  font-weight: 500;
  cursor: pointer;
  transition: transform .18s cubic-bezier(.22, 1, .36, 1),
              background-color .18s cubic-bezier(.22, 1, .36, 1),
              border-color .18s cubic-bezier(.22, 1, .36, 1),
              color .18s cubic-bezier(.22, 1, .36, 1),
              box-shadow .18s cubic-bezier(.22, 1, .36, 1);
}
.btn:hover { text-decoration: none; }

.btn--primary {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
}
.btn--primary:hover {
  background: var(--accent-soft);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ============================================================================
   COMPONENTS — summary cards / lede / pull-quote / stats
   ============================================================================ */
.lede {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  max-width: 28ch;
  margin-bottom: var(--sp-6);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  grid-auto-flow: dense;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-5);
  transition: transform .18s cubic-bezier(.22, 1, .36, 1),
              border-color .18s cubic-bezier(.22, 1, .36, 1),
              box-shadow .18s cubic-bezier(.22, 1, .36, 1);
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-2);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-2);
}
.card__title::before {
  content: "▸ ";
  color: var(--accent);
}

.card__text {
  color: var(--text-muted);
  font-size: var(--fs-body);
}

.pull-quote {
  margin: 0 0 var(--sp-6);
  padding: var(--sp-5);
  border-left: 3px solid var(--violet);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: color-mix(in srgb, var(--violet) 7%, transparent);
}
.pull-quote__label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--violet);
  margin-bottom: var(--sp-2);
}
.pull-quote__text {
  color: var(--text);
  line-height: 1.65;
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
  padding: var(--sp-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}
.stat-strip__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.stat-strip__value {
  font-family: var(--font-mono);
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--accent);
}
.stat-strip__label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-faint);
}

/* ============================================================================
   COMPONENTS — skills filter + chips
   ============================================================================ */
.skills__input {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.skills {
  position: relative;
}

.skills__tabs {
  border: 0;
  padding: 0;
  margin: 0 0 var(--sp-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.skills__tab {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  user-select: none;
  transition: color .18s cubic-bezier(.22, 1, .36, 1),
              border-color .18s cubic-bezier(.22, 1, .36, 1),
              background-color .18s cubic-bezier(.22, 1, .36, 1);
}
.skills__tab:hover { color: var(--accent); border-color: var(--accent); }

/* active tab */
#skills-all:checked ~ .skills__tabs .skills__tab[for="skills-all"],
#skills-backend:checked ~ .skills__tabs .skills__tab[for="skills-backend"],
#skills-cloud:checked ~ .skills__tabs .skills__tab[for="skills-cloud"],
#skills-frontend:checked ~ .skills__tabs .skills__tab[for="skills-frontend"],
#skills-practice:checked ~ .skills__tabs .skills__tab[for="skills-practice"] {
  color: var(--accent);
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

/* keyboard focus on the hidden radio highlights its label */
.skills:has(#skills-all:focus-visible) .skills__tab[for="skills-all"],
.skills:has(#skills-backend:focus-visible) .skills__tab[for="skills-backend"],
.skills:has(#skills-cloud:focus-visible) .skills__tab[for="skills-cloud"],
.skills:has(#skills-frontend:focus-visible) .skills__tab[for="skills-frontend"],
.skills:has(#skills-practice:focus-visible) .skills__tab[for="skills-practice"] {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.skills__grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.skill-chip {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  cursor: default;
  transition: opacity .18s cubic-bezier(.22, 1, .36, 1),
              transform .18s cubic-bezier(.22, 1, .36, 1),
              border-color .18s cubic-bezier(.22, 1, .36, 1),
              color .18s cubic-bezier(.22, 1, .36, 1);
}
.skill-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* CSS-only filter: non-matching chips fade + shrink (stay in DOM for print/SEO) */
#skills-backend:checked ~ .skills__grid .skill-chip:not([data-cat~="backend"]) { opacity: .15; transform: scale(.96); }
#skills-cloud:checked ~ .skills__grid .skill-chip:not([data-cat~="cloud"]) { opacity: .15; transform: scale(.96); }
#skills-frontend:checked ~ .skills__grid .skill-chip:not([data-cat~="frontend"]) { opacity: .15; transform: scale(.96); }
#skills-practice:checked ~ .skills__grid .skill-chip:not([data-cat~="practice"]) { opacity: .15; transform: scale(.96); }

.skills__empty {
  flex-basis: 100%;
  display: none;
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-faint);
  padding: var(--sp-3) 0;
}

/* ============================================================================
   COMPONENTS — tooltips (data-tip + title)
   ============================================================================ */
[data-tip] { position: relative; cursor: help; }

[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--bg-inset);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  line-height: 1.3;
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  z-index: 30;
  transition: opacity .18s cubic-bezier(.22, 1, .36, 1),
              transform .18s cubic-bezier(.22, 1, .36, 1);
}

[data-tip]::before {
  content: "";
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--border-strong);
  opacity: 0;
  pointer-events: none;
  z-index: 30;
  transition: opacity .18s cubic-bezier(.22, 1, .36, 1);
}

[data-tip]:hover::after,
[data-tip]:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
[data-tip]:hover::before,
[data-tip]:focus-visible::before {
  opacity: 1;
}

/* ============================================================================
   COMPONENTS — experience timeline / role cards
   ============================================================================ */
.timeline {
  position: relative;
  padding-left: var(--sp-6);
  border-left: 2px solid var(--border);
}

.role {
  position: relative;
  margin-bottom: var(--sp-6);
}
.role:last-child { margin-bottom: 0; }

.role::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--sp-6) - 5px);
  top: 30px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-50%);
}

.role--current::after {
  content: "";
  position: absolute;
  left: calc(-1 * var(--sp-6) - 11px);
  top: 30px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  transform: translateY(-50%);
  animation: pulse-ring 2s ease-out infinite;
}

.role__card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-5);
  transition: transform .18s cubic-bezier(.22, 1, .36, 1),
              box-shadow .18s cubic-bezier(.22, 1, .36, 1),
              background-color .18s cubic-bezier(.22, 1, .36, 1);
}
.role__card:hover,
.role__card:focus-within {
  transform: translateY(-2px);
  box-shadow: inset 3px 0 0 0 var(--accent), var(--shadow-2);
}

.role__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.role__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.role__company { color: var(--text); }
.role__part {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  font-weight: 400;
  color: var(--text-muted);
}

.role__position {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-top: 2px;
}

.role__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-faint);
  margin: var(--sp-2) 0 var(--sp-3);
}

.role__bullets { margin-bottom: var(--sp-3); }
.role__bullets li {
  position: relative;
  padding-left: var(--sp-4);
  margin-bottom: var(--sp-2);
  color: var(--text-muted);
}
.role__bullets li:last-child { margin-bottom: 0; }
.role__bullets li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.role__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}
.tag {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--text-muted);
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
}

/* ============================================================================
   COMPONENTS — pills (status)
   ============================================================================ */
.pill {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid currentColor;
  white-space: nowrap;
}

.pill--active {
  color: var(--lime);
  background: color-mix(in srgb, var(--lime) 10%, transparent);
}
.pill--inprogress {
  color: var(--amber);
  background: color-mix(in srgb, var(--amber) 10%, transparent);
}
.pill--expired {
  color: var(--rose);
  background: color-mix(in srgb, var(--rose) 10%, transparent);
}

/* ============================================================================
   COMPONENTS — certifications (flip cards)
   ============================================================================ */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  grid-auto-flow: dense;
  gap: var(--sp-5);
}

.cert-card {
  perspective: 1200px;
  min-height: 280px;
  transition: transform .18s cubic-bezier(.22, 1, .36, 1);
}
.cert-card:hover,
.cert-card:focus,
.cert-card:focus-within {
  transform: translateY(-4px);
}

.cert-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 280px;
  transform-style: preserve-3d;
  transition: transform .6s cubic-bezier(.22, 1, .36, 1);
}

.cert-card:hover .cert-card__inner,
.cert-card:focus .cert-card__inner,
.cert-card:focus-within .cert-card__inner {
  transform: rotateY(180deg);
}

.cert-card__face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-2);
  padding: var(--sp-5);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.cert-card__back {
  transform: rotateY(180deg);
  justify-content: center;
  gap: var(--sp-3);
}

/* animated gradient border that traces the edge on hover/focus */
.cert-card__front::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius) + 2px);
  padding: 2px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  background: conic-gradient(from var(--angle), transparent 0%, var(--accent) 15%, var(--cyan) 30%, transparent 45%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .2s ease;
  animation: angle-rotate 4s linear infinite;
  pointer-events: none;
}

.cert-card:hover .cert-card__front::before,
.cert-card:focus .cert-card__front::before,
.cert-card:focus-within .cert-card__front::before {
  opacity: 1;
}

.cert-card__badge {
  display: grid;
  place-items: center;
  width: 58px;
  height: 66px;
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-micro);
  letter-spacing: 0.02em;
  margin-bottom: var(--sp-2);
}
.cert-card__badge--gcp   { background: #4285F4; color: #FFFFFF; }
.cert-card__badge--az    { background: #0078D4; color: #FFFFFF; }
.cert-card__badge--boomi { background: #0A7EA4; color: #FFFFFF; }
.cert-card__badge--hashi { background: #7B42BC; color: #FFFFFF; }
.cert-card__badge--cka   { background: #326CE5; color: #FFFFFF; }

.cert-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  letter-spacing: -0.01em;
}

.cert-card__issuer {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
}

.cert-card__hint {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--text-faint);
}

.cert-card__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
}

.cert-card__credential {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text);
  word-break: break-all;
}

.cert-card__verify {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--cyan);
}

/* "sample" tag on dummy cards */
.cert-card--dummy .cert-card__front::after {
  content: "sample";
  position: absolute;
  top: 12px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 2px 7px;
}

/* ghost card — empty slot / wink */
.cert-card--ghost {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: 280px;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  color: var(--text-faint);
  text-decoration: none;
  transition: border-color .18s cubic-bezier(.22, 1, .36, 1),
              color .18s cubic-bezier(.22, 1, .36, 1);
}
.cert-card--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}
.cert-card__plus {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  line-height: 1;
}
.cert-card__ghost-text {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
}

/* ============================================================================
   COMPONENTS — education stepper
   ============================================================================ */
.edu {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
  padding-top: var(--sp-2);
}

.edu::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--border-strong);
}

.edu__step { position: relative; }

.edu__dot {
  position: relative;
  z-index: 1;
  display: block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  margin-bottom: var(--sp-4);
}

.edu__content { padding-right: var(--sp-2); }

.edu__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  letter-spacing: -0.01em;
  margin-bottom: 2px;
}

.edu__school {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-faint);
}

.progress-bar {
  width: 100%;
  max-width: 200px;
  height: 4px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
  margin: var(--sp-2) 0 var(--sp-3);
}

.progress-bar__fill {
  display: block;
  width: 40%;
  height: 100%;
  border-radius: 999px;
  background: var(--amber);
  animation: indeterminate 1.4s ease-in-out infinite;
}

/* ============================================================================
   COMPONENTS — interests tag cloud
   ============================================================================ */
.interests {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-4);
  align-items: baseline;
}

.interest {
  font-family: var(--font-mono);
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  cursor: default;
  transition: color .18s cubic-bezier(.22, 1, .36, 1),
              border-color .18s cubic-bezier(.22, 1, .36, 1),
              rotate .18s cubic-bezier(.22, 1, .36, 1);
}

/* varied base tilt + size/weight — "the human bit" */
.interest:nth-child(odd)  { rotate: .5deg; }
.interest:nth-child(even) { rotate: -.4deg; }
.interest:nth-child(2n)   { font-size: 1.05em; }
.interest:nth-child(3n)   { font-size: 0.92em; font-weight: 500; }
.interest:nth-child(4n)   { font-size: 1.12em; }
.interest:nth-child(5n)   { font-size: 0.95em; font-weight: 700; }

.interest:hover {
  rotate: -1.5deg;
  color: var(--violet);
  border-color: var(--violet);
}

/* ============================================================================
   COMPONENTS — footer
   ============================================================================ */
.site-footer {
  border-top: 2px solid var(--border-strong);
  background: var(--bg-inset);
  padding: var(--sp-8) var(--sp-5);
}

.site-footer__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-6);
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 700;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin: var(--sp-3) 0;
}
.site-footer__links a {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
}
.site-footer__links a:hover { color: var(--accent); }

.site-footer__loc {
  font-size: var(--fs-meta);
  color: var(--text-faint);
}

.site-footer__note { text-align: right; }

.site-footer__mono {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
}
.site-footer__mono--small {
  font-size: var(--fs-micro);
  color: var(--text-faint);
}
.site-footer__copyright {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--text-faint);
  margin-top: var(--sp-3);
}

.site-footer__meta {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-3);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--border);
}

.site-footer__top {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--text-muted);
}
.site-footer__top:hover { color: var(--accent); }

.site-footer__secret {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  font-family: var(--font-mono);
  color: var(--text-faint);
  transition: color .18s cubic-bezier(.22, 1, .36, 1),
              border-color .18s cubic-bezier(.22, 1, .36, 1);
}
.site-footer__secret:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

/* ============================================================================
   COMPONENTS — easter egg (:target)
   ============================================================================ */
.secret {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: var(--sp-5);
  background: rgba(0, 0, 0, .6);
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s ease, visibility .2s ease;
}
.secret:target {
  opacity: 1;
  visibility: visible;
}

.secret__panel {
  width: 100%;
  max-width: 420px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: var(--sp-5) var(--sp-6);
  box-shadow: var(--shadow-2);
  transform: translateY(10px);
  transition: transform .25s cubic-bezier(.22, 1, .36, 1);
}
.secret:target .secret__panel { transform: translateY(0); }

.secret__title {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--cyan);
  margin-bottom: var(--sp-3);
}

.secret__ascii {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  line-height: 1.6;
  color: var(--text);
  margin: 0 0 var(--sp-4);
  white-space: pre;
}

.secret__close {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--text-muted);
}

/* ============================================================================
   THEMES — light overrides
   The checkbox #theme-toggle is an "invert" switch. See README.
   ============================================================================ */
:root:has(#theme-toggle:checked) {
  --bg:            #FAF9F7;
  --bg-elevated:   #FFFFFF;
  --bg-inset:      #F1EFEA;
  --border:        #E4E0DA;
  --border-strong: #D8D3CB;

  --text:          #16191F;
  --text-muted:    #5C6675;
  --text-faint:    #A6A099;

  --accent:        #E8450F;
  --accent-soft:   #F0663A;
  --accent-glow:   rgba(232, 69, 15, 0.14);

  --cyan:          #0E9AA7;
  --cyan-glow:     rgba(14, 154, 167, 0.12);
  --lime:          #4E7A1A;
  --amber:         #A16207;
  --rose:          #C02E46;
  --violet:        #6D4FC7;
  --violet-glow:   rgba(109, 79, 199, 0.10);

  --shadow-1:    0 1px 2px rgba(0, 0, 0, .06);
  --shadow-2:    0 8px 24px -8px rgba(0, 0, 0, .12);
  --shadow-glow: 0 0 0 1px var(--accent), 0 8px 32px -8px var(--accent-glow);

  color-scheme: light;
}

@media (prefers-color-scheme: light) {
  :root:not(:has(#theme-toggle:checked)) {
    --bg:            #FAF9F7;
    --bg-elevated:   #FFFFFF;
    --bg-inset:      #F1EFEA;
    --border:        #E4E0DA;
    --border-strong: #D8D3CB;

    --text:          #16191F;
    --text-muted:    #5C6675;
    --text-faint:    #A6A099;

    --accent:        #E8450F;
    --accent-soft:   #F0663A;
    --accent-glow:   rgba(232, 69, 15, 0.14);

    --cyan:          #0E9AA7;
    --cyan-glow:     rgba(14, 154, 167, 0.12);
    --lime:          #4E7A1A;
    --amber:         #A16207;
    --rose:          #C02E46;
    --violet:        #6D4FC7;
    --violet-glow:   rgba(109, 79, 199, 0.10);

    --shadow-1:    0 1px 2px rgba(0, 0, 0, .06);
    --shadow-2:    0 8px 24px -8px rgba(0, 0, 0, .12);
    --shadow-glow: 0 0 0 1px var(--accent), 0 8px 32px -8px var(--accent-glow);

    color-scheme: light;
  }

  /* invert: on a light system, a checked toggle = explicitly go dark */
  :root:has(#theme-toggle:checked) {
    --bg:            #0B0E14;
    --bg-elevated:   #131824;
    --bg-inset:      #090C12;
    --border:        #1F2733;
    --border-strong: #2E3B4D;

    --text:          #E6EDF3;
    --text-muted:    #8B97A8;
    --text-faint:    #55606F;

    --accent:        #FF5C35;
    --accent-soft:   #FF8A66;
    --accent-glow:   rgba(255, 92, 53, 0.18);

    --cyan:          #46D9E8;
    --cyan-glow:     rgba(70, 217, 232, 0.14);
    --lime:          #A8E063;
    --amber:         #F5C451;
    --rose:          #F2637E;
    --violet:        #A78BFA;
    --violet-glow:   rgba(167, 139, 250, 0.12);

    --shadow-1:    0 1px 2px rgba(0, 0, 0, .4);
    --shadow-2:    0 8px 24px -8px rgba(0, 0, 0, .6);
    --shadow-glow: 0 0 0 1px var(--accent), 0 8px 32px -8px var(--accent-glow);

    color-scheme: dark;
  }
}

/* theme-toggle icon reflects the CURRENT theme */
:root:has(#theme-toggle:checked) .theme-toggle__icon--sun { display: inline-flex; }
:root:has(#theme-toggle:checked) .theme-toggle__icon--moon { display: none; }

@media (prefers-color-scheme: light) {
  :root:not(:has(#theme-toggle:checked)) .theme-toggle__icon--sun { display: inline-flex; }
  :root:not(:has(#theme-toggle:checked)) .theme-toggle__icon--moon { display: none; }
  :root:has(#theme-toggle:checked) .theme-toggle__icon--sun { display: none; }
  :root:has(#theme-toggle:checked) .theme-toggle__icon--moon { display: inline-flex; }
}

/* Hide the toggle if :has() is unavailable (dark theme still renders). */
@supports not (selector(:has(*))) {
  .theme-toggle { display: none; }
}

/* ============================================================================
   MOTION — keyframes + entrance
   ============================================================================ */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes bob {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(8px); opacity: .4; }
}

@keyframes mesh-drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(2%, -2%, 0) scale(1.06); }
}

@keyframes pulse-ring {
  0%   { transform: translateY(-50%) scale(.6); opacity: .9; }
  70%  { transform: translateY(-50%) scale(1.5); opacity: 0; }
  100% { transform: translateY(-50%) scale(1.5); opacity: 0; }
}

@keyframes indeterminate {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

@keyframes angle-rotate {
  to { --angle: 360deg; }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* entrance — hero only (visible on load), staggered */
.hero__name,
.hero__title,
.terminal,
.hero__meta,
.hero__actions {
  animation: fade-up .7s cubic-bezier(.22, 1, .36, 1) both;
}
.hero__name    { animation-delay: .05s; }
.hero__title   { animation-delay: .12s; }
.terminal      { animation-delay: .20s; }
.hero__meta    { animation-delay: .28s; }
.hero__actions { animation-delay: .36s; }

/* ============================================================================
   MOTION — reduced motion
   ============================================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .terminal__cursor { animation: none; opacity: 1; }
  .role--current::after { animation: none; opacity: .6; }
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */
@media (max-width: 820px) {
  .section {
    grid-template-columns: 1fr;
    gap: var(--sp-4);
    padding: var(--sp-7) var(--sp-5);
  }

  .section__rail {
    position: static;
    flex-direction: row;
    align-items: baseline;
    gap: var(--sp-3);
  }
  .section__num { font-size: var(--fs-meta); }
  .section__line { display: none; }

  .edu {
    grid-template-columns: 1fr;
    gap: var(--sp-5);
    padding-left: var(--sp-5);
  }
  .edu::before {
    left: 6px;
    right: auto;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
  }
  .edu__dot {
    position: absolute;
    left: calc(-1 * var(--sp-5) - 6px);
    top: 6px;
    margin-bottom: 0;
  }

  .site-footer__inner { grid-template-columns: 1fr; }
  .site-footer__note { text-align: left; }
  .site-footer__meta { grid-column: 1; }

  .stat-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .site-header__inner { flex-wrap: wrap; }
  .nav {
    order: 3;
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: var(--sp-2);
    -webkit-overflow-scrolling: touch;
  }
  .nav__link { white-space: nowrap; }
}

@media (max-width: 480px) {
  .hero__inner { padding-top: var(--sp-8); }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
}