/* Fikayo Otun personal site
   Charcoal / ink + restrained slate-teal accent */

:root {
  --ink: #16181c;
  --ink-soft: #3a3f47;
  --muted: #6b7280;
  --line: #d8dde3;
  --paper: #eef1f4;
  --paper-deep: #e4e9ef;
  --surface: #f7f8fa;
  --accent: #2f5f6b;
  --accent-hover: #254c56;
  --accent-soft: rgba(47, 95, 107, 0.1);
  --max: 68rem;
  --nav-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-body: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background:
    radial-gradient(ellipse 90% 55% at 8% -10%, rgba(47, 95, 107, 0.09), transparent 55%),
    radial-gradient(ellipse 70% 45% at 100% 0%, rgba(22, 24, 28, 0.05), transparent 50%),
    linear-gradient(180deg, var(--surface) 0%, var(--paper) 42%, var(--paper-deep) 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
  transition: color 0.2s var(--ease);
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100%;
  z-index: 100;
  padding: 0.65rem 1rem;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  border-radius: 0.25rem;
}

.skip-link:focus {
  top: 1rem;
}

/* --- Layout --- */

.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  backdrop-filter: blur(12px);
  background: rgba(247, 248, 250, 0.82);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(247, 248, 250, 0.94);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 1rem;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  line-height: 1;
}

.brand:hover {
  color: var(--ink);
}

.brand span {
  display: block;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.2rem;
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 0.35rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.nav-toggle-bars {
  display: block;
  width: 1.1rem;
  height: 1px;
  background: var(--ink);
  box-shadow: 0 -5px 0 var(--ink), 0 5px 0 var(--ink);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.15rem 1.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--ink-soft);
  text-decoration: none;
  position: relative;
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--ink);
}

.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  margin-left: 0.5rem;
  padding: 0.45rem 0.95rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: #fff !important;
  background: var(--accent);
  text-decoration: none !important;
  border-radius: 0.3rem;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--accent-hover);
  color: #fff !important;
  transform: translateY(-1px);
}

/* --- Typography --- */

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 0.75rem;
}

h1 {
  font-size: clamp(2.4rem, 5.5vw, 3.75rem);
}

h2 {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
}

h3 {
  font-size: clamp(1.35rem, 2.2vw, 1.65rem);
}

.lede {
  font-size: clamp(1.1rem, 1.8vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 38rem;
  margin: 0;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.85rem;
}

/* --- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 0.3rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

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

.btn-primary {
  background: var(--accent);
  color: #fff;
}

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

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

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

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

/* --- Hero --- */

.hero {
  padding: clamp(3.5rem, 10vw, 6.5rem) 0 clamp(3rem, 8vw, 5rem);
  min-height: calc(100vh - var(--nav-h) - 2rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 4.75rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 1.5rem;
  color: var(--ink);
}

.hero-line {
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 34rem;
  margin: 0;
  font-weight: 400;
}

.hero-support {
  margin-top: 1rem;
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 32rem;
}

/* --- Sections --- */

.section {
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-head {
  max-width: 36rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.section-head p {
  color: var(--ink-soft);
  margin: 0.5rem 0 0;
}

/* --- Offerings lanes (home, not cards) --- */

.lanes {
  display: grid;
  gap: 0;
}

.lane {
  display: grid;
  grid-template-columns: minmax(6rem, 9rem) 1fr;
  gap: 1.25rem 2rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: background 0.3s var(--ease);
}

.lane:last-child {
  border-bottom: 1px solid var(--line);
}

.lane:hover {
  background: var(--accent-soft);
}

.lane-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  padding-top: 0.35rem;
}

.lane h3 {
  margin-bottom: 0.4rem;
}

.lane p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 36rem;
}

.lane-more {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
}

.lane:hover .lane-more {
  text-decoration: underline;
}

/* --- MbDD teaser --- */

.book-teaser {
  display: grid;
  gap: 1.5rem;
  max-width: 40rem;
}

.book-teaser .status {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  margin-top: 0.25rem;
}

.book-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.2;
  margin: 0 0 0.35rem;
}

.book-acronym {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

/* --- Page hero (inner) --- */

.page-hero {
  padding: clamp(2.75rem, 7vw, 4.5rem) 0 clamp(2rem, 4vw, 3rem);
}

.page-hero .lede {
  margin-top: 0.75rem;
}

/* --- Offering detail blocks --- */

.offer-block {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
}

.offer-block + .offer-block {
  border-top: 1px solid var(--line);
}

.offer-block p {
  color: var(--ink-soft);
  max-width: 38rem;
}

.offer-points {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  max-width: 38rem;
}

.offer-points li {
  position: relative;
  padding: 0.65rem 0 0.65rem 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
}

.offer-points li:last-child {
  border-bottom: 1px solid var(--line);
}

.offer-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15rem;
  width: 0.45rem;
  height: 1px;
  background: var(--accent);
}

/* --- Author / themes --- */

.themes {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  max-width: 40rem;
}

.themes li {
  padding: 1.1rem 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
}

.themes li:last-child {
  border-bottom: 1px solid var(--line);
}

.themes strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 0.35rem;
}

.status-line {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.55rem 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--accent);
  border-top: 1px solid var(--accent);
}

/* --- About prose --- */

.prose {
  max-width: 38rem;
}

.prose p {
  color: var(--ink-soft);
  margin: 0 0 1.15rem;
}

.prose p:last-child {
  margin-bottom: 0;
}

/* --- Stub / writing --- */

.stub {
  padding: clamp(3rem, 8vw, 5rem) 0 clamp(4rem, 10vw, 6rem);
  max-width: 32rem;
}

.stub p {
  color: var(--ink-soft);
}

/* --- Contact --- */

.contact-panel {
  padding: clamp(2.5rem, 7vw, 4.5rem) 0 clamp(4rem, 10vw, 6rem);
  max-width: 36rem;
}

.contact-panel p {
  color: var(--ink-soft);
  margin: 0 0 1.5rem;
}

.contact-channels {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  max-width: 28rem;
}

.contact-channels li {
  border-top: 1px solid var(--line);
}

.contact-channels li:last-child {
  border-bottom: 1px solid var(--line);
}

.contact-channels a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  text-decoration: none;
  color: var(--ink);
}

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

.contact-channels .channel-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.contact-channels .channel-hint {
  font-size: 0.85rem;
  color: var(--muted);
}

/* --- Footer --- */

.site-footer {
  margin-top: auto;
  padding: 2.5rem 0 2rem;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.35);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem 2rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--ink);
  text-decoration: none;
}

.footer-brand:hover {
  color: var(--ink);
}

.footer-meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0.4rem 0 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-nav a {
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-decoration: none;
}

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

/* --- Reveal motion --- */

.reveal {
  opacity: 0;
  transform: translateY(1.1rem);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .nav-list a::after,
  .btn,
  .nav-cta,
  .lane {
    transition: none;
  }
}

/* --- Responsive --- */

@media (max-width: 800px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-list {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(247, 248, 250, 0.98);
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
  }

  .nav-list.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav-list li {
    border-bottom: 1px solid var(--line);
  }

  .nav-list a {
    display: block;
    padding: 0.9rem 0;
  }

  .nav-list a::after {
    display: none;
  }

  .nav-cta {
    margin: 0.85rem 0 0;
    justify-content: center;
    width: 100%;
  }

  .lane {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .hero {
    min-height: auto;
    padding-top: 3rem;
  }
}

@media (max-width: 480px) {
  .wrap {
    width: min(100% - 1.75rem, var(--max));
  }
}