/* ==========================================================
   OptMum Digital Abu Dhabi — main stylesheet (mobile-first)
   ========================================================== */

:root {
  --navy: #0B1F3A;
  --navy-2: #13305A;
  --navy-3: #071629;
  --blue: #1A5FA8;
  --blue-soft: #DCE8F6;
  --red: #C8202A;
  --red-soft: #F9E3E4;
  --ink: #0E1B2C;
  --text: #3A4A5E;
  --muted: #5A6A7E;
  --line: #E3E9F1;
  --line-2: #D3DCE8;
  --bg-soft: #F3F6FA;
  --white: #FFFFFF;
  --radius: 20px;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Bricolage Grotesque', 'Plus Jakarta Sans', sans-serif;
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--blue); }
h1, h2, h3 { margin: 0; color: var(--navy); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
address { font-style: normal; }
:focus-visible { outline: 3px solid #FFB020; outline-offset: 2px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section { padding: 56px 0; }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--navy); color: var(--white); }
.section--dark h2, .section--dark h3 { color: var(--white); }

.skip-link {
  position: absolute; left: -9999px; top: 8px; z-index: 100;
  background: var(--white); color: var(--navy); padding: 10px 16px; border-radius: 8px; font-weight: 700;
}
.skip-link:focus { left: 8px; }

/* ---------- Type ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  margin-bottom: 12px;
  font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--red);
}
.section--dark .eyebrow { color: #FF8A8F; }
.h2 {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(28px, 6.5vw, 46px); line-height: 1.08; letter-spacing: -.015em;
}
.h2--sm { font-size: clamp(24px, 5vw, 34px); line-height: 1.1; }
.lead { margin-top: 16px; font-size: 17px; color: var(--text); }
.section--dark .lead { color: #C9D6E6; }
.section-head { max-width: 760px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 0 26px;
  border-radius: 999px; border: 1.5px solid transparent;
  font: inherit; font-weight: 700; text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background-color .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--sm { min-height: 44px; padding: 0 18px; font-size: 14px; }
.btn--red { background: var(--red); color: var(--white); }
.btn--red:hover { background: #A81820; }
.btn--navy { background: var(--navy); color: var(--white); }
.btn--white { background: var(--white); color: var(--navy); }
.btn--ghost-light { background: transparent; color: var(--white); border-color: var(--white); }
.btn--ghost-light:hover { background: rgba(255,255,255,.1); }
.btn--block { width: 100%; }

/* ---------- Top bar + header ---------- */
.topbar { background: var(--navy-3); color: #DCE6F2; font-size: 13px; padding: 8px 0; }
.topbar__inner { display: flex; flex-wrap: wrap; gap: 4px 20px; justify-content: space-between; align-items: center; }
.topbar a { color: var(--white); font-weight: 600; text-decoration: none; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(1.4) blur(8px);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 68px; }
.brand { display: flex; align-items: center; min-height: 44px; }
.brand img { height: 38px; width: auto; display: block; }
.site-header__actions { display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  width: 44px; height: 44px; border-radius: 12px;
  border: 1px solid var(--line-2); background: var(--white); color: var(--ink);
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
}
.nav {
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--white); border-bottom: 1px solid var(--line);
  box-shadow: 0 20px 40px -20px rgba(11,31,58,.25);
  display: none;
}
.nav.is-open { display: block; }
.nav__list { padding: 8px 20px 16px; }
.nav__list a {
  display: flex; align-items: center; min-height: 50px;
  color: var(--ink); font-weight: 600; text-decoration: none;
  border-bottom: 1px solid #EEF2F7;
}
.nav__list a:hover { color: var(--blue); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--navy); color: var(--white);
  padding: 44px 0 150px;
}
.hero__photo {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: .35;
}
.hero__skyline {
  position: absolute; left: 0; right: 0; bottom: 0;
  width: 100%; height: 140px; display: block;
}
.hero__inner { position: relative; display: grid; gap: 36px; align-items: center; }
.hero .eyebrow { color: #9CC3EE; }
.hero .eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: #FF5A61; }
.hero h1 {
  color: var(--white);
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(34px, 8.6vw, 64px); line-height: 1.04; letter-spacing: -.02em;
}
.hero__sub { margin-top: 20px; font-size: clamp(16px, 4vw, 19px); color: #D3DEEC; max-width: 580px; }
.hero__ctas { margin-top: 28px; display: grid; gap: 12px; }
.hero__badges { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.badge-tile {
  flex: 1 1 140px; max-width: 200px;
  height: 60px; padding: 8px 12px;
  border-radius: 12px; background: var(--white);
  display: flex; align-items: center; justify-content: center;
}
.badge-tile img { max-height: 44px; width: auto; display: block; }
.badge-tile--outline { border: 1px solid var(--line); height: 64px; }
.badge-fallback { font-size: 13px; font-weight: 700; color: var(--navy); text-align: center; line-height: 1.25; }
.rating { flex: 1 1 100%; display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; }
.rating .stars { color: #FFC94D; letter-spacing: 1px; }

.search-card {
  background: var(--white); color: var(--ink);
  border-radius: 24px; padding: 18px;
  box-shadow: 0 30px 70px -24px rgba(0,0,0,.5);
  width: 100%; max-width: 520px; margin: 0 auto;
}
.search-card__bar {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; border-radius: 999px; background: var(--bg-soft);
  font-size: 15px; color: var(--text);
}
.search-card__list { margin-top: 14px; display: grid; gap: 10px; }
.search-card__item {
  padding: 14px 16px; border-radius: 16px; border: 1px solid var(--line);
  display: flex; gap: 14px; align-items: flex-start;
}
.search-card__item strong { display: block; font-size: 15px; }
.search-card__item div span { display: block; margin-top: 2px; font-size: 14px; color: #4A5A6E; }
.tag {
  flex: 0 0 auto; font-family: var(--font-display); font-weight: 800; font-size: 13px;
  color: var(--white); background: var(--blue); border-radius: 8px; padding: 4px 8px;
}
.tag--navy { background: var(--navy); }
.tag--red { background: var(--red); }
.tag--soft { background: var(--blue-soft); color: var(--navy); }

/* ---------- Clients ---------- */
.clients { padding: 40px 0; border-bottom: 1px solid var(--line); text-align: center; }
.clients h2 {
  margin-bottom: 22px; font-size: 13px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted);
}
.clients__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.client-tile {
  height: 72px; border-radius: 14px; border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; padding: 10px 14px;
}
.client-tile img { max-height: 44px; max-width: 100%; width: auto; filter: grayscale(1); opacity: .75; transition: filter .2s, opacity .2s; }
.client-tile:hover img { filter: none; opacity: 1; }
.client-tile__name { font-family: var(--font-display); font-weight: 700; font-size: 17px; color: #6B7A8D; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.stat { padding: 22px 18px; border-radius: var(--radius); background: var(--bg-soft); }
.stat__value { font-family: var(--font-display); font-weight: 800; font-size: clamp(30px, 7vw, 48px); line-height: 1; color: var(--navy); }
.stat__label { margin-top: 10px; font-size: 14px; color: #4A5A6E; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 16px; margin-top: 32px; }
.card {
  padding: 24px; border-radius: var(--radius); border: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 10px; background: var(--white);
}
.card__num { font-family: var(--font-display); font-weight: 800; font-size: 14px; color: var(--blue); }
.card h3 { font-size: 20px; font-weight: 700; }
.card p { color: #4A5A6E; font-size: 15px; }
.card__link {
  margin-top: auto; padding-top: 6px; min-height: 44px;
  display: inline-flex; align-items: center;
  font-weight: 700; font-size: 15px; text-decoration: none;
}
.card--dark { background: var(--navy); border-color: var(--navy); }
.card--dark h3, .card--dark .card__link { color: var(--white); }
.card--dark p { color: #C9D6E6; }
.card--dark .card__num { color: #8FB8E6; }
.card--navy2 { background: var(--navy-2); border: 0; }
.card--navy2 p { color: #C9D6E6; }
.card--soft { background: var(--bg-soft); border: 0; }
.card--soft h3 { font-size: 17px; }

/* ---------- Why ---------- */
.split { display: grid; gap: 40px; }
.badges-row { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 12px; }
.checklist { margin-top: 24px; display: grid; gap: 12px; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: #2B3B50; }
.checklist svg { flex: 0 0 auto; margin-top: 3px; }

/* ---------- Steps ---------- */
.step__n {
  display: inline-flex; width: 40px; height: 40px; border-radius: 12px;
  background: var(--navy); color: var(--white);
  align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 800;
}

/* ---------- Case studies ---------- */
.case { border-radius: var(--radius); border: 1px solid var(--line); overflow: hidden; }
.case__img { height: 160px; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; background: var(--blue-soft); color: var(--blue); }
.case__img--red { background: var(--red-soft); color: #A01A22; }
.case__img--grey { background: #E6EAF0; color: var(--navy); }
.case__body { padding: 22px; }
.case__cat { font-size: 13px; font-weight: 700; color: var(--red); text-transform: uppercase; letter-spacing: .06em; }
.case h3 { margin-top: 8px; font-size: 19px; }
.case p { margin-top: 8px; font-size: 15px; color: #4A5A6E; }
.row-between { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: flex-end; }

/* ---------- Chips + areas ---------- */
.chips { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 10px; }
.chips a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px;
  border-radius: 999px; background: var(--white); border: 1px solid var(--line-2);
  color: var(--ink); font-weight: 600; font-size: 14px; text-decoration: none;
}
.chips a:hover { border-color: var(--blue); color: var(--blue); }
.areas { margin-top: 20px; display: grid; gap: 10px; }
.area {
  min-height: 64px; padding: 10px 16px; border-radius: 14px;
  background: var(--white); border: 1px solid var(--line-2);
  display: flex; flex-direction: column; justify-content: center;
}
.area strong { color: var(--navy); }
.area span { font-size: 13px; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; }
.faq__list { margin-top: 28px; display: grid; gap: 10px; }
.faq details { border-radius: 16px; border: 1px solid var(--line); padding: 0 20px; background: var(--white); }
.faq summary {
  min-height: 60px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  cursor: pointer; list-style: none;
  font-weight: 700; font-size: 17px; color: var(--navy);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 24px; font-weight: 500; color: var(--blue); flex: 0 0 auto; }
.faq details[open] summary::after { content: '–'; }
.faq details p { padding-bottom: 20px; color: var(--text); }

/* ---------- Contact form ---------- */
.contact { display: grid; gap: 36px; align-items: start; }
.contact__info { margin-top: 24px; display: grid; gap: 10px; font-size: 15px; }
.contact__info a { display: inline-flex; align-items: center; min-height: 44px; color: var(--white); font-weight: 700; text-decoration: none; }
.contact__info li:last-child { color: #C9D6E6; }

.form {
  background: var(--white); color: var(--ink);
  border-radius: 24px; padding: 20px;
  display: grid; gap: 14px;
}
.form label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; }
.form input, .form select, .form textarea {
  width: 100%; min-height: 48px;
  border-radius: 12px; border: 1px solid #C3CEDC;
  padding: 10px 14px; font: inherit; font-weight: 400; color: var(--ink); background: var(--white);
}
.form textarea { min-height: 96px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--blue); outline: none; box-shadow: 0 0 0 3px rgba(26,95,168,.18); }
.form__full { grid-column: 1 / -1; }
.form__note { font-size: 13px; color: var(--muted); }
.form__hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.alert { grid-column: 1 / -1; padding: 12px 16px; border-radius: 12px; font-size: 14px; font-weight: 600; }
.alert--error { background: var(--red-soft); color: #8E141B; }
.btn[disabled] { opacity: .7; cursor: wait; transform: none; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-3); color: #B8C6D8; padding: 56px 0 100px; font-size: 14px; }
.footer-grid { display: grid; gap: 32px; }
.footer-logo { width: 120px; height: 120px; border-radius: 16px; background: var(--white); display: block; margin-bottom: 16px; }
.site-footer h2 { margin-bottom: 12px; font-size: 15px; color: var(--white); }
.site-footer ul a { display: inline-flex; min-height: 36px; align-items: center; color: #B8C6D8; text-decoration: none; }
.site-footer ul a:hover { color: var(--white); }
.site-footer address { display: grid; gap: 8px; }
.site-footer address a { color: var(--white); text-decoration: none; }
.socials { margin-top: 16px; display: flex; gap: 8px; }
.socials a {
  width: 44px; height: 44px; border-radius: 12px; background: var(--navy-2); color: var(--white);
  display: inline-flex; align-items: center; justify-content: center; text-decoration: none; font-weight: 700;
}
.footer-bottom {
  margin-top: 40px; padding-top: 20px; border-top: 1px solid #1D3555;
  display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between;
}
.footer-bottom__links { display: flex; gap: 20px; }
.footer-bottom a { color: #B8C6D8; }

.wa-float {
  position: fixed; right: 16px; bottom: 16px; z-index: 60;
  width: 58px; height: 58px; border-radius: 50%;
  background: #1E8E4E; color: var(--white);
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 30px -8px rgba(0,0,0,.4);
}

/* ---------- Thank-you page ---------- */
.thanks { padding: 72px 0 96px; background: var(--bg-soft); }
.thanks__card {
  max-width: 720px; margin: 0 auto; text-align: center;
  background: var(--white); border-radius: 28px; padding: 40px 22px;
  border: 1px solid var(--line);
}
.thanks__icon {
  width: 76px; height: 76px; margin: 0 auto 20px; border-radius: 50%;
  background: #E3F4EA; color: #1E8E4E;
  display: flex; align-items: center; justify-content: center;
}
.thanks h1 { font-family: var(--font-display); font-weight: 800; font-size: clamp(30px, 7vw, 48px); line-height: 1.08; }
.thanks__steps { margin: 28px 0 0; display: grid; gap: 12px; text-align: left; }
.thanks__steps li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; border-radius: 14px; background: var(--bg-soft); }
.thanks__steps .step__n { width: 32px; height: 32px; border-radius: 10px; font-size: 14px; flex: 0 0 auto; }
.thanks__ctas { margin-top: 28px; display: grid; gap: 12px; }

/* ==========================================================
   ≥ 600px
   ========================================================== */
@media (min-width: 600px) {
  .hero__ctas { grid-template-columns: auto auto; justify-content: start; }
  .clients__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .areas { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 28px; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .thanks__ctas { grid-template-columns: auto auto; justify-content: center; }
  .thanks__card { padding: 48px 40px; }
}

/* ==========================================================
   ≥ 960px (desktop)
   ========================================================== */
@media (min-width: 960px) {
  .section { padding: 96px 0; }
  .hero { padding: 88px 0 220px; }
  .hero__skyline { height: 230px; }
  .hero__inner { grid-template-columns: 1.15fr 1fr; gap: 56px; }
  .search-card { padding: 22px; }

  .nav-toggle { display: none; }
  .nav { position: static; display: block; background: none; border: 0; box-shadow: none; }
  .nav__list { display: flex; gap: 4px; padding: 0; }
  .nav__list a { min-height: 44px; padding: 0 12px; border: 0; border-radius: 10px; font-size: 15px; }
  .nav__list a:hover { background: var(--bg-soft); }

  .clients__grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .split { grid-template-columns: 1fr 1.2fr; gap: 56px; }
  .split--even { grid-template-columns: 1fr 1fr; }
  .contact { grid-template-columns: 1fr 1.15fr; gap: 56px; }
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr 1.2fr; }
  .wa-float { right: 24px; bottom: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}