/* =========================================================
   M.H Radwan — author site
   Design tokens first; edit colors here and everything follows.
   ========================================================= */
:root {
  --navy-900: #05070f;
  --navy-800: #090d1b;
  --navy-700: #0e1426;
  --navy-600: #151d33;
  --gold: #e8b866;
  --gold-soft: #f2d6a0;
  --ember: #d1541f;
  --ember-soft: #f07a3c;
  --ink: #eae6dd;
  --ink-dim: #a3a49f;
  --line: rgba(232, 184, 102, 0.16);

  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "Karla", system-ui, sans-serif;
  --wrap: 1120px;
  --radius: 4px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 300;
  color: var(--ink);
  background: var(--navy-900);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }

body::before {
  /* night-sky gradient wash */
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(232,184,102,0.10), transparent 60%),
    radial-gradient(90% 60% at 80% 110%, rgba(209,84,31,0.10), transparent 60%),
    linear-gradient(180deg, var(--navy-800), var(--navy-900) 60%, #020307);
}
main, .nav, .footer { position: relative; z-index: 1; }

.wrap { width: min(var(--wrap), 100% - 3rem); margin-inline: auto; }
.section { padding: clamp(5rem, 11vw, 9rem) 0; }
.center { text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0);
}

.eyebrow {
  font-size: 0.72rem; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--gold); margin: 0 0 0.9rem;
}
.section__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.1rem, 5vw, 3.4rem); line-height: 1.1;
  margin: 0 0 1rem; letter-spacing: 0.01em;
}
.section__lede { color: var(--ink-dim); max-width: 46ch; margin: 0 auto 3.5rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; text-decoration: none; cursor: pointer;
  font-family: var(--sans); font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase;
  padding: 0.95rem 1.9rem; border-radius: var(--radius);
  border: 1px solid transparent; transition: 0.25s ease;
}
.btn--primary {
  background: linear-gradient(135deg, var(--ember), var(--ember-soft));
  color: #150a03; box-shadow: 0 12px 34px -14px rgba(209, 84, 31, 0.9);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -14px rgba(240,122,60,0.9); }
.btn--ghost { border-color: var(--line); color: var(--gold-soft); }
.btn--ghost:hover { border-color: var(--gold); background: rgba(232,184,102,0.07); }
.btn--lg { padding: 1.1rem 2.6rem; }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem clamp(1.5rem, 4vw, 3rem);
  transition: background 0.3s ease, backdrop-filter 0.3s ease, border-color 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(5, 7, 15, 0.82); backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}
.nav__brand {
  font-family: var(--serif); font-size: 1.15rem; letter-spacing: 0.18em;
  text-transform: uppercase; text-decoration: none; color: var(--ink);
}
.nav__links { display: flex; gap: 2rem; }
.nav__links a {
  text-decoration: none; font-size: 0.74rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-dim); transition: color 0.2s;
}
.nav__links a:hover, .nav__links a.is-active { color: var(--gold); }
.nav__toggle {
  display: none; background: none; border: 0; cursor: pointer;
  width: 34px; height: 26px; padding: 0;
}
.nav__toggle span { display: block; height: 1px; background: var(--gold); margin: 7px 0; transition: 0.25s; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh; display: grid; place-items: center;
  text-align: center; padding: 8rem 1.5rem 5rem; position: relative;
}
.hero__inner { max-width: 720px; }
.hero__name {
  font-family: var(--serif); font-weight: 300;
  font-size: clamp(3.2rem, 13vw, 7.5rem); line-height: 0.95;
  margin: 0 0 1.4rem; letter-spacing: 0.02em;
  background: linear-gradient(180deg, #fff8ea, var(--gold) 70%, #b98a3f);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__tagline {
  font-family: var(--serif); font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  color: var(--ink-dim); max-width: 40ch; margin: 0 auto 2.6rem; line-height: 1.6;
}
.hero__actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero__scroll {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  font-size: 0.6rem; letter-spacing: 0.4em; text-transform: uppercase;
  color: var(--ink-dim); opacity: 0.6; animation: bob 2.6s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* ---------- About ---------- */
.about__grid {
  display: grid; grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 6vw, 5rem); align-items: center;
}
.about__portrait { position: relative; }
.about__portrait img {
  border-radius: var(--radius); border: 1px solid var(--line);
  filter: saturate(0.9) contrast(1.05);
}
.tag {
  display: block; margin-top: 0.7rem; font-size: 0.68rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-dim); opacity: 0.7;
}
.about__text p { color: var(--ink-dim); max-width: 56ch; }
.facts { list-style: none; padding: 0; margin: 2.4rem 0 0; display: grid; gap: 1rem; }
.facts li { border-left: 1px solid var(--line); padding-left: 1rem; }
.facts strong { display: block; font-family: var(--serif); font-size: 1.15rem; color: var(--gold-soft); font-weight: 400; }
.facts span { font-size: 0.85rem; color: var(--ink-dim); }

/* ---------- Universes ---------- */
.switch {
  position: relative; display: flex; gap: 0.25rem; width: max-content;
  margin: 0 auto 3.5rem; padding: 0.35rem;
  border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,0.02);
}
.switch__thumb {
  position: absolute; top: 0.35rem; bottom: 0.35rem; left: 0.35rem; width: 0;
  border-radius: 999px; background: rgba(232,184,102,0.14);
  border: 1px solid rgba(232,184,102,0.35);
  transition: transform 0.4s cubic-bezier(.4,0,.2,1), width 0.4s, background 0.4s, border-color 0.4s;
}
.switch.is-ember .switch__thumb { background: rgba(209,84,31,0.18); border-color: rgba(240,122,60,0.45); }
.switch__btn {
  position: relative; z-index: 1; background: none; border: 0; cursor: pointer;
  font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-dim);
  padding: 0.7rem 1.5rem; border-radius: 999px; transition: color 0.3s;
}
.switch__btn.is-active { color: var(--gold-soft); }
.switch.is-ember .switch__btn.is-active { color: var(--ember-soft); }

.panel { display: none; animation: fade 0.5s ease both; }
.panel.is-active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.panel__grid {
  display: grid; grid-template-columns: 0.7fr 1.3fr; gap: clamp(2rem, 6vw, 4.5rem);
  align-items: center;
}
.panel__art img {
  border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: 0 40px 80px -40px rgba(232,184,102,0.35);
}
.panel[data-accent="ember"] .panel__art img { box-shadow: 0 40px 80px -40px rgba(240,122,60,0.45); }
.panel[data-accent="ember"] .eyebrow { color: var(--ember-soft); }
.panel__body h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(1.9rem, 4vw, 2.8rem); margin: 0 0 1rem; }
.panel__body > p { color: var(--ink-dim); max-width: 52ch; }

.booklist { list-style: none; padding: 0; margin: 2.2rem 0 0; }
.booklist li {
  display: flex; align-items: baseline; gap: 1rem;
  padding: 1rem 0; border-top: 1px solid var(--line);
}
.booklist__no { font-family: var(--serif); color: var(--gold); font-size: 0.9rem; }
.panel[data-accent="ember"] .booklist__no { color: var(--ember-soft); }
.booklist__title { font-family: var(--serif); font-size: 1.25rem; flex: 1; }
.booklist__title em { color: var(--ink-dim); font-size: 0.85rem; font-style: normal; }
.booklist__link { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); text-decoration: none; }
.ar-title { font-size: 0.8em; font-weight: 400; color: var(--ink-dim); margin-inline-start: 0.45em; letter-spacing: 0; }
.title-sep { display: inline-block; width: 0.7em; height: 1px; background: currentColor; opacity: 0.55; vertical-align: middle; margin-inline-start: 0.5em; margin-inline-end: 0.45em; }
.booklist li.is-soon .booklist__link { color: var(--ink-dim); }

/* ---------- Featured ---------- */
.featured { position: relative; }
.featured::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 55% at 30% 50%, rgba(232,184,102,0.09), transparent 70%);
  pointer-events: none;
}
.featured__grid {
  display: grid; grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(2rem, 7vw, 5rem); align-items: center;
  border: 1px solid var(--line); border-radius: 8px;
  padding: clamp(1.75rem, 5vw, 3.5rem);
  background: linear-gradient(160deg, rgba(21,29,51,0.75), rgba(5,7,15,0.6));
}
.featured__cover { position: relative; }
.featured__cover img { border-radius: var(--radius); box-shadow: 0 50px 90px -40px rgba(0,0,0,0.9); }
.badge {
  position: absolute; top: -0.9rem; left: -0.9rem;
  background: linear-gradient(135deg, var(--ember), var(--ember-soft));
  color: #150a03; font-size: 0.66rem; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  padding: 0.55rem 1rem; border-radius: 999px;
  box-shadow: 0 10px 30px -10px rgba(209,84,31,0.9);
}
.featured__title { font-family: var(--serif); font-weight: 400; font-size: clamp(2.2rem, 5.5vw, 3.6rem); margin: 0 0 1.1rem; }
.featured__hook { color: var(--ink-dim); max-width: 50ch; }
.featured blockquote {
  margin: 1.8rem 0 2.2rem; padding-left: 1.2rem;
  border-left: 2px solid var(--gold);
  font-family: var(--serif); font-size: 1.2rem; font-style: italic; color: var(--gold-soft);
}
.fineprint { font-size: 0.78rem; color: var(--ink-dim); margin-top: 1rem; }

/* ---------- All books ---------- */
.books__grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: clamp(1.5rem, 4vw, 2.75rem);
}
.book__cover {
  display: block; overflow: hidden; border-radius: var(--radius);
  border: 1px solid var(--line); margin-bottom: 1.1rem;
  aspect-ratio: 2/3;
}
.book__cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.6s cubic-bezier(.2,.8,.2,1); }
.book__cover:hover img { transform: scale(1.05); }
.book__cover--empty {
  aspect-ratio: 2/3; display: grid; place-items: center; text-align: center;
  color: var(--ink-dim); font-size: 0.75rem; letter-spacing: 0.18em; text-transform: uppercase;
  background: repeating-linear-gradient(45deg, rgba(255,255,255,0.02) 0 12px, transparent 12px 24px);
  text-decoration: none;
}
.book__universe { font-size: 0.64rem; letter-spacing: 0.24em; text-transform: uppercase; margin: 0 0 0.4rem; }
.book__universe--gold { color: var(--gold); }
.book__universe--ember { color: var(--ember-soft); }
.book__title { font-family: var(--serif); font-weight: 400; font-size: 1.4rem; margin: 0 0 0.25rem; }
.book__meta { font-size: 0.8rem; color: var(--ink-dim); margin: 0 0 0.7rem; }
.book__link { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); text-decoration: none; }
.book__link.is-muted { color: var(--ink-dim); }

/* ---------- Newsletter ---------- */
.newsletter__signature {
  display: block; width: clamp(190px, 26vw, 290px); height: auto;
  margin: 0 auto 0.75rem; opacity: 0.95;
}
.newsletter__title { font-size: clamp(1.7rem, 3.6vw, 2.4rem); margin: 0 0 0.6rem; }
.newsletter__box {
  border: 1px solid var(--line); border-radius: 8px;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 5vw, 3rem);
  background: linear-gradient(160deg, rgba(21,29,51,0.7), rgba(5,7,15,0.5));
  text-align: center;
}
.signup { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }
.signup input {
  flex: 1 1 320px; max-width: 380px;
  background: rgba(255,255,255,0.03); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 0.95rem 1.1rem;
  color: var(--ink); font-family: var(--sans); font-size: 0.95rem;
}
.signup input::placeholder { color: rgba(163,164,159,0.6); }
.signup input:focus { outline: none; border-color: var(--gold); }
.signup__msg { min-height: 1.4rem; margin: 1rem 0 0; font-size: 0.85rem; color: var(--gold-soft); }
.signup__msg.is-error { color: var(--ember-soft); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 3rem 0; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.footer__brand { font-family: var(--serif); letter-spacing: 0.2em; text-transform: uppercase; margin: 0; }
.footer__social { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.footer__social a { font-size: 0.75rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-dim); text-decoration: none; }
.footer__social a:hover { color: var(--gold); }
.footer__copy { font-size: 0.75rem; color: var(--ink-dim); margin: 0; }

/* ---------- Reveal on scroll ---------- */
.section { opacity: 0; transform: translateY(24px); transition: opacity 0.8s ease, transform 0.8s ease; }
.section.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .about__grid, .panel__grid, .featured__grid { grid-template-columns: 1fr; }
  .about__portrait { max-width: 340px; }
  .panel__art, .featured__cover { max-width: 300px; margin-inline: auto; }
  .nav__links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 1.25rem; padding: 1.75rem;
    background: rgba(5,7,15,0.96); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__toggle { display: block; }
  .switch { width: 100%; }
  .switch__btn { flex: 1; padding: 0.7rem 0.5rem; font-size: 0.66rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .section { opacity: 1; transform: none; }
}