/* ============================================================
   Oreoluwa Fagbamiye — IT & Cybersecurity Portfolio
   Design system: dark "terminal" palette, cyan-teal accent,
   JetBrains Mono display + Inter body.
   ============================================================ */

:root,
[data-theme='light'] {
  /* Surfaces — cool slate */
  --color-bg: #f4f6f8;
  --color-surface: #ffffff;
  --color-surface-2: #f7f9fb;
  --color-surface-offset: #eef1f5;
  --color-surface-offset-2: #e6eaf0;
  --color-surface-dynamic: #dde3ea;
  --color-divider: #e2e7ed;
  --color-border: #d3dae3;

  /* Text */
  --color-text: #0f1b2d;
  --color-text-muted: #516079;
  --color-text-faint: #9aa7ba;
  --color-text-inverse: #f4f6f8;

  /* Primary Accent — Cyber Cyan */
  --color-primary: #0e7490;
  --color-primary-hover: #0b5a6e;
  --color-primary-active: #084757;
  --color-primary-highlight: #cfe9f0;

  /* Secondary — terminal green */
  --color-accent-green: #15803d;
  --color-accent-green-highlight: #d6ecd9;

  /* Warning */
  --color-warning: #9a3412;
  --color-warning-highlight: #f4d8c8;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 27, 45, 0.06);
  --shadow-md: 0 6px 18px rgba(15, 27, 45, 0.08);
  --shadow-lg: 0 18px 40px rgba(15, 27, 45, 0.12);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 1040px;
  --content-wide: 1200px;

  /* 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(3rem, 0.5rem + 7vw, 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;

  /* Fonts */
  --font-display: 'JetBrains Mono', 'SF Mono', ui-monospace, monospace;
  --font-body: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
}

[data-theme='dark'] {
  --color-bg: #0a0f1a;
  --color-surface: #0f1623;
  --color-surface-2: #131c2b;
  --color-surface-offset: #0d1521;
  --color-surface-offset-2: #16202f;
  --color-surface-dynamic: #1b2738;
  --color-divider: #1d2838;
  --color-border: #26344a;

  --color-text: #d6dde6;
  --color-text-muted: #8a98ac;
  --color-text-faint: #5b6b81;
  --color-text-inverse: #0a0f1a;

  --color-primary: #22d3ee;
  --color-primary-hover: #67e8f9;
  --color-primary-active: #a5f3fc;
  --color-primary-highlight: #11323d;

  --color-accent-green: #4ade80;
  --color-accent-green-highlight: #14281f;

  --color-warning: #fb923c;
  --color-warning-highlight: #3a2415;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0a0f1a;
    --color-surface: #0f1623;
    --color-surface-2: #131c2b;
    --color-surface-offset: #0d1521;
    --color-surface-offset-2: #16202f;
    --color-surface-dynamic: #1b2738;
    --color-divider: #1d2838;
    --color-border: #26344a;
    --color-text: #d6dde6;
    --color-text-muted: #8a98ac;
    --color-text-faint: #5b6b81;
    --color-text-inverse: #0a0f1a;
    --color-primary: #22d3ee;
    --color-primary-hover: #67e8f9;
    --color-primary-active: #a5f3fc;
    --color-primary-highlight: #11323d;
    --color-accent-green: #4ade80;
    --color-accent-green-highlight: #14281f;
    --color-warning: #fb923c;
    --color-warning-highlight: #3a2415;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.55);
  }
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(
      circle at 15% -5%,
      color-mix(in oklab, var(--color-primary) 12%, transparent),
      transparent 40%
    ),
    radial-gradient(
      circle at 90% 0%,
      color-mix(in oklab, var(--color-accent-green) 8%, transparent),
      transparent 35%
    );
  background-attachment: fixed;
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
  line-height: 1.15;
}

p,
li,
figcaption {
  text-wrap: pretty;
  max-width: 72ch;
}

::selection {
  background: color-mix(in oklab, var(--color-primary) 30%, transparent);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

a,
button {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
  color: var(--color-text);
  text-decoration: none;
}

.logo__mark {
  color: var(--color-primary);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
}

.nav a:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* ===== Hero proof strip ===== */
.hero__proof {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-6);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.hero__proof-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero__proof-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-primary);
  line-height: 1.1;
}

.hero__proof-label {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

/* ===== Experience timeline ===== */
.exp-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  border-left: 2px solid var(--color-divider);
  padding-left: var(--space-6);
}

.exp-item {
  position: relative;
}

.exp-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-6) - 5px);
  top: var(--space-1);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
}

.exp-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-3);
  margin-bottom: var(--space-1);
}

.exp-item__role {
  font-weight: 700;
  font-size: var(--text-base);
}

.exp-item__org {
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
}

.exp-item__dates {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-left: auto;
}

.exp-item ul {
  margin-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.exp-item li {
  position: relative;
  padding-left: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.exp-item li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* ===== Certifications grid ===== */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-4);
}

.cert-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: var(--color-surface);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.cert-card:hover {
  border-color: color-mix(in oklab, var(--color-primary) 45%, var(--color-border));
  box-shadow: var(--shadow-md);
}

.cert-card__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-green);
  margin-bottom: var(--space-2);
}

.cert-card__badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent-green);
}

.cert-card__badge.is-progress {
  color: var(--color-text-faint);
}

.cert-card__badge.is-progress::before {
  background: var(--color-warning);
}

.cert-card__title {
  font-weight: 700;
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.cert-card__org {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

@media (max-width: 720px) {
  .nav {
    display: none;
  }
}

/* ===== Hero ===== */
.hero {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  position: relative;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.hero__eyebrow::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent-green);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-accent-green) 25%, transparent);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-3xl);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
  max-width: 18ch;
}

.hero h1 .accent {
  color: var(--color-primary);
}

.hero__lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-bottom: var(--space-8);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
}

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

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* terminal-style status line */
.terminal {
  margin-top: var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

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

.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border);
}

.terminal__dot--r {
  background: #ef4444;
}
.terminal__dot--y {
  background: #f59e0b;
}
.terminal__dot--g {
  background: var(--color-accent-green);
}

.terminal__title {
  margin-left: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.terminal__body {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  line-height: 1.8;
  padding: var(--space-5);
  color: var(--color-text-muted);
  min-height: 9rem;
}

.terminal__body .prompt {
  color: var(--color-primary);
}

.terminal__body .ok {
  color: var(--color-accent-green);
}

.terminal__body .caret {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  vertical-align: text-bottom;
  background: var(--color-primary);
  margin-left: 2px;
  animation: blink 1.1s steps(2, start) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* ===== Section base ===== */
.section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.section__head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-10);
}

.section__label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  letter-spacing: -0.01em;
}

.section__lede {
  color: var(--color-text-muted);
  max-width: 60ch;
}

/* ===== About ===== */
.about__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-10);
  align-items: start;
}

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

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

.fact-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.fact-card__row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

.fact-card__row:last-child {
  border-bottom: 0;
}

.fact-card__key {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.fact-card__val {
  font-size: var(--text-sm);
  color: var(--color-text);
  text-align: right;
}

@media (max-width: 820px) {
  .about__grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Skills ===== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.skill-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: var(--color-surface);
  transition:
    transform var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.skill-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in oklab, var(--color-primary) 45%, var(--color-border));
  box-shadow: var(--shadow-md);
}

.skill-card__icon {
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.skill-card h3 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.skill-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.tag {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

/* ===== Projects ===== */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

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

.project-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in oklab, var(--color-primary) 50%, var(--color-border));
  box-shadow: var(--shadow-lg);
}

.project-card__media {
  aspect-ratio: 16 / 9;
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-divider);
  display: grid;
  place-items: center;
}

.project-card__media svg {
  color: var(--color-primary);
  opacity: 0.85;
}

.project-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-5);
  gap: var(--space-3);
}

.project-card h3 {
  font-size: var(--text-base);
  font-weight: 700;
}

.project-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

.status-badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-warning);
}

.status-badge.is-ready::before {
  background: var(--color-accent-green);
}

/* ===== Certs timeline ===== */
.certs {
  border-left: 2px solid var(--color-divider);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  padding-left: var(--space-6);
}

.cert {
  position: relative;
}

.cert::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-6) - 5px);
  top: var(--space-1);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
}

.cert__status {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

.cert__title {
  font-weight: 700;
  font-size: var(--text-base);
}

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

.cert__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.cert.is-done .cert__status {
  color: var(--color-accent-green);
}

/* ===== Resume highlights ===== */
.resume__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-5);
}

.stat {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  background: var(--color-surface);
  text-align: center;
}

.stat__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-2xl);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

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

/* ===== Contact ===== */
.contact {
  text-align: center;
}

.contact h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.contact p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  margin-inline: auto;
}

.contact__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
}

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

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

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

.footer__inner a:hover {
  color: var(--color-primary);
}