/* =========================================================
   MANTRADATA — Design tokens
   Palette drawn from the brand mark: saffron/gold (mantra
   wing) + electric cyan/deep blue (data wing) on deep indigo.
   ========================================================= */
:root {
  --ink: #0A0E1A;
  --ink-soft: #0E1526;
  --navy: #131B31;
  --navy-line: #232E4C;

  --gold-1: #FFD24C;
  --gold-2: #F2A93C;
  --gold-3: #C97A12;

  --cyan-1: #7FE3FA;
  --cyan-2: #35C9F0;
  --blue-3: #0B3C91;

  --ivory: #F3EFE6;
  --slate: #9AA6C2;
  --slate-dim: #6B7594;

  --font-display: 'Marcellus', serif;
  --font-mono: 'Space Mono', monospace;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  --container: 1180px;
  --radius: 14px;
  --ease: cubic-bezier(.22,.9,.32,1);
}

/* =========================================================
   Reset
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 400; margin: 0 0 .5em; line-height: 1.15; }
p { margin: 0 0 1em; color: var(--slate); }

:focus-visible {
  outline: 2px solid var(--cyan-1);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--cyan-1);
  color: var(--ink);
  padding: .75em 1.25em;
  z-index: 999;
  font-family: var(--font-mono);
}
.skip-link:focus { left: 1em; top: 1em; }

.section-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate-dim);
  margin: 0 0 1em;
}
.eyebrow-gold { color: var(--gold-2); }
.eyebrow-cyan { color: var(--cyan-2); }

.section-title { font-size: clamp(1.8rem, 3.2vw, 2.6rem); color: var(--ivory); }

.text-gold { background: linear-gradient(120deg, var(--gold-1), var(--gold-3)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.text-cyan { background: linear-gradient(120deg, var(--cyan-1), var(--blue-3)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .95em 1.9em;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .04em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease), border-color .35s var(--ease);
}
.btn-primary {
  background: linear-gradient(120deg, var(--gold-1), var(--gold-3) 55%, var(--cyan-2));
  color: var(--ink);
  font-weight: 700;
  box-shadow: 0 10px 30px -12px rgba(242,169,60,.55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -14px rgba(53,201,240,.55); }
.btn-ghost {
  background: transparent;
  color: var(--ivory);
  border-color: var(--navy-line);
}
.btn-ghost:hover { border-color: var(--cyan-2); color: var(--cyan-1); }
.btn-block { width: 100%; }

/* =========================================================
   Preloader
   ========================================================= */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: #0c0907;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .7s var(--ease), visibility .7s var(--ease);
}
#preloader.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
#preloader-video {
  width: min(72vmin, 620px);
  height: min(72vmin, 620px);
  object-fit: cover;
  -webkit-mask-image: radial-gradient(circle, #000 58%, transparent 78%);
  mask-image: radial-gradient(circle, #000 58%, transparent 78%);
}
body.preload-active { overflow: hidden; }

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10,14,26,0);
  border-bottom: 1px solid transparent;
  transition: background .4s var(--ease), border-color .4s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(10,14,26,.86);
  backdrop-filter: blur(10px);
  border-color: var(--navy-line);
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.1rem clamp(1.25rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: .6em; }
.brand-mark { height: 40px; width: auto; }
.brand-name { font-family: var(--font-display); font-size: 1.25rem; letter-spacing: .01em; }

.main-nav { display: flex; align-items: center; gap: 2.1rem; }
.main-nav a:not(.nav-cta) {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--slate);
  position: relative;
  padding-bottom: 4px;
}
.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--cyan-2);
  transition: right .3s var(--ease);
}
.main-nav a:not(.nav-cta):hover { color: var(--ivory); }
.main-nav a:not(.nav-cta):hover::after { right: 0; }
.nav-cta {
  font-family: var(--font-mono);
  font-size: .8rem;
  padding: .6em 1.3em;
  border-radius: 999px;
  border: 1px solid var(--gold-2);
  color: var(--gold-1);
}
.nav-cta:hover { background: var(--gold-2); color: var(--ink); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--ivory); transition: transform .3s var(--ease), opacity .3s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: .2rem;
  background: var(--ink-soft);
  border-top: 1px solid var(--navy-line);
  padding: 1rem clamp(1.25rem, 4vw, 3rem) 1.5rem;
}
.mobile-nav a { font-family: var(--font-mono); font-size: .95rem; color: var(--slate); padding: .7em 0; border-bottom: 1px solid var(--navy-line); }
.mobile-nav .nav-cta { border: none; color: var(--gold-1); }
.mobile-nav.is-open { display: flex; }

/* =========================================================
   Hero
   ========================================================= */
.hero { position: relative; padding: clamp(7rem,14vh,10rem) clamp(1.25rem, 4vw, 3rem) 4rem; overflow: hidden; }
.hero-wash {
  position: absolute; inset: -10% -10% auto -10%;
  height: 120%;
  background:
    radial-gradient(45% 55% at 18% 30%, rgba(242,169,60,.16), transparent 70%),
    radial-gradient(45% 55% at 82% 40%, rgba(53,201,240,.16), transparent 70%);
  z-index: 0;
  pointer-events: none;
}
.hero-grid {
  position: relative; z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 2rem;
  align-items: center;
}
.hero-title { font-size: clamp(2.6rem, 6vw, 4.6rem); letter-spacing: -.01em; }
.hero-sub { max-width: 46ch; font-size: 1.05rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin: 1.6rem 0 2.4rem; }

.hero-stats { display: flex; gap: 2.4rem; flex-wrap: wrap; margin: 0; padding-top: 1.6rem; border-top: 1px solid var(--navy-line); }
.hero-stats dt { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--slate-dim); margin-bottom: .35em; }
.hero-stats dd { margin: 0; font-size: .92rem; color: var(--ivory); }

.hero-mark { position: relative; display: flex; align-items: center; justify-content: center; }
.mark-glow {
  position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, rgba(53,201,240,.22), rgba(242,169,60,.14) 55%, transparent 75%);
  filter: blur(10px);
  animation: pulse 6s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { transform: scale(1); opacity: .85; } 50% { transform: scale(1.08); opacity: 1; } }
.mark-img { position: relative; width: min(70%, 420px); height: auto; animation: float 7s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

.trace-divider { display: block; width: 100%; height: auto; margin-top: 2rem; }

/* =========================================================
   About
   ========================================================= */
.about { padding: 5rem 0; background: linear-gradient(180deg, var(--ink) 0%, var(--ink-soft) 100%); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); }
.about-mantra h2, .about-data h2 { font-size: clamp(1.5rem, 2.6vw, 1.9rem); }
.about-mantra { border-left: 2px solid var(--gold-3); padding-left: 1.6rem; }
.about-data { border-left: 2px solid var(--blue-3); padding-left: 1.6rem; }
.about-list { display: grid; gap: .6rem; margin-top: 1.2rem; }
.about-list li { font-family: var(--font-mono); font-size: .85rem; color: var(--cyan-1); padding-left: 1.3em; position: relative; }
.about-list li::before { content: '›'; position: absolute; left: 0; color: var(--cyan-2); }

/* =========================================================
   Services
   ========================================================= */
.services { padding: 5rem 0; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin-top: 2.5rem; }
.service-card {
  background: var(--navy);
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  transition: transform .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease);
}
.service-card:hover { transform: translateY(-6px); border-color: var(--cyan-2); box-shadow: 0 20px 40px -24px rgba(53,201,240,.4); }
.service-icon { display: inline-block; font-size: 1.1rem; color: var(--gold-2); margin-bottom: .8rem; }
.service-card h3 { font-size: 1.05rem; font-family: var(--font-body); font-weight: 700; color: var(--ivory); }
.service-card p { font-size: .92rem; margin: 0; }

/* =========================================================
   Process
   ========================================================= */
.process { padding: 5rem 0; background: var(--ink-soft); }
.process-list { display: grid; gap: 1.6rem; margin-top: 2.5rem; }
.process-list li { display: grid; grid-template-columns: 64px 1fr; gap: 1.4rem; align-items: start; padding-bottom: 1.6rem; border-bottom: 1px solid var(--navy-line); }
.process-list li:last-child { border-bottom: none; }
.step-num { font-family: var(--font-mono); font-size: 1.3rem; color: var(--gold-2); }
.process-list h3 { font-size: 1.15rem; font-family: var(--font-body); font-weight: 700; color: var(--ivory); margin-bottom: .3em; }
.process-list p { margin: 0; font-size: .95rem; }

/* =========================================================
   Work
   ========================================================= */
.work { padding: 5rem 0; }
.work-note { max-width: 50ch; }
.work-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.1rem; margin-top: 2rem; }
.work-card {
  border-radius: var(--radius);
  padding: 1.6rem;
  min-height: 180px;
  display: flex; flex-direction: column; justify-content: flex-end;
  border: 1px solid var(--navy-line);
  position: relative;
  overflow: hidden;
}
.work-card--gold { background: linear-gradient(155deg, rgba(242,169,60,.14), var(--navy) 60%); }
.work-card--cyan { background: linear-gradient(155deg, rgba(53,201,240,.14), var(--navy) 60%); }
.work-tag { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--slate-dim); margin-bottom: .8rem; }
.work-card h3 { font-size: 1rem; font-family: var(--font-body); font-weight: 700; color: var(--ivory); margin-bottom: .2em; }
.work-card p { margin: 0; font-size: .82rem; color: var(--slate-dim); font-style: italic; }

/* =========================================================
   Enquiry
   ========================================================= */
.enquiry { padding: 5.5rem 0 6rem; background: var(--ink-soft); }
.enquiry-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 5vw, 4.5rem); }
.enquiry-meta { margin-top: 2rem; display: grid; gap: .9rem; }
.enquiry-meta li { font-size: .92rem; color: var(--ivory); }
.enquiry-meta span { display: block; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--slate-dim); margin-bottom: .25em; }

.enquiry-form {
  background: linear-gradient(155deg, rgba(242,169,60,.05), var(--navy) 40%, rgba(53,201,240,.05));
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 3vw, 2.5rem);
  box-shadow: 0 30px 60px -30px rgba(0,0,0,.5);
}
.form-row { margin-bottom: 1.35rem; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-row--split { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.enquiry-form label { display: block; font-family: var(--font-mono); font-size: .74rem; letter-spacing: .06em; text-transform: uppercase; color: var(--slate-dim); margin-bottom: .5em; }
.enquiry-form input, .enquiry-form select, .enquiry-form textarea {
  width: 100%;
  background: rgba(10,14,26,.65);
  border: 1px solid var(--navy-line);
  border-radius: 10px;
  padding: .85em 1em;
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: .95rem;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.enquiry-form input::placeholder, .enquiry-form textarea::placeholder { color: var(--slate-dim); opacity: .75; }
.enquiry-form input:hover, .enquiry-form select:hover, .enquiry-form textarea:hover { border-color: #34406a; }
.enquiry-form input:focus, .enquiry-form select:focus, .enquiry-form textarea:focus {
  border-color: var(--cyan-2);
  background: rgba(10,14,26,.9);
  box-shadow: 0 0 0 4px rgba(53,201,240,.14);
}
.enquiry-form select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%237FE3FA' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1em center;
  padding-right: 2.6em;
  cursor: pointer;
}
.enquiry-form select:invalid { color: var(--slate-dim); }
.enquiry-form textarea { resize: vertical; min-height: 110px; }

.phone-group { display: flex; gap: .5rem; }
.phone-group select {
  flex: 0 0 auto;
  width: 6.4em;
  padding-left: .8em;
  padding-right: 2em;
  background-position: right .6em center;
}
.phone-group input { flex: 1 1 auto; min-width: 0; }
.form-status { margin: 1.1rem 0 0; font-family: var(--font-mono); font-size: .82rem; min-height: 1.2em; }
.form-status[data-state="success"] { color: var(--cyan-1); }
.form-status[data-state="error"] { color: var(--gold-1); }

/* =========================================================
   Footer
   ========================================================= */
.site-footer { padding: 3rem 0; border-top: 1px solid var(--navy-line); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1.5rem; }
.footer-inner .brand-mark { height: 30px; }
.footer-inner nav { display: flex; gap: 1.6rem; flex-wrap: wrap; }
.footer-inner nav a { font-family: var(--font-mono); font-size: .8rem; color: var(--slate); }
.footer-inner nav a:hover { color: var(--cyan-1); }
.footer-copy { font-size: .82rem; color: var(--slate-dim); margin: 0; width: 100%; text-align: center; }

/* =========================================================
   Scroll reveal
   ========================================================= */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; text-align: left; }
  .hero-mark { order: -1; max-width: 280px; margin: 0 auto 1rem; }
  .about-grid, .enquiry-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .work-grid { grid-template-columns: repeat(2, 1fr); }
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 680px) {
  .form-row--split { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .services-grid, .work-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.4rem; }
  .process-list li { grid-template-columns: 44px 1fr; gap: 1rem; }
}

@media (max-width: 360px) {
  .phone-group select { width: 5.6em; padding-left: .5em; padding-right: 1.6em; font-size: .88rem; }
  .phone-group input { font-size: .88rem; }
  .hero-title { font-size: clamp(2.1rem, 8vw, 2.6rem); }
}