/* ============================================================
   SOVEREIGN TAX ADVISORY — Design System
   Navy + metallic gold + cream. Editorial, regal, modern.
   ============================================================ */

:root {
  /* Navy scale */
  --navy-900: #06121f;
  --navy-850: #081626;
  --navy-800: #0a1a2e;
  --navy-700: #0c2039;
  --navy-600: #102a4a;
  --navy-500: #173658;

  /* Light / paper */
  --paper:    #faf7ef;
  --cream:    #f3ede0;
  --cream-2:  #ece4d3;

  /* Ink (text on light) */
  --ink:      #18202c;
  --ink-soft: #4d5566;
  --ink-mute: #7c8494;

  /* Gold */
  --gold-200: #f0dcab;
  --gold-300: #e6cd93;
  --gold-400: #d3ad68;
  --gold-500: #c0944a;
  --gold-600: #a87e3a;
  --gold-grad: linear-gradient(135deg, #f0dcab 0%, #d3ad68 45%, #b88a3f 100%);
  --gold-line: linear-gradient(90deg, transparent, var(--gold-400), transparent);

  /* On-navy text */
  --on-navy:      #eef1f6;
  --on-navy-soft: rgba(238,241,246,0.72);
  --on-navy-mute: rgba(238,241,246,0.5);

  --hairline: rgba(211,173,104,0.22);
  --hairline-light: rgba(24,32,44,0.12);

  --danger: #d97a6c;

  /* Type */
  --serif:    "Cormorant Garamond", "Times New Roman", serif;
  --wordmark: "Marcellus", "Cormorant Garamond", serif;
  --sans:     "Manrope", system-ui, -apple-system, sans-serif;

  --maxw: 1280px;
  --gutter: clamp(20px, 5vw, 80px);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--sans);
  background: var(--navy-800);
  color: var(--on-navy);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
}

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

::selection { background: var(--gold-400); color: var(--navy-900); }

/* ---------- Layout helpers ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(80px, 11vw, 170px); position: relative; }

/* ---------- Type primitives ---------- */
.eyebrow {
  font-family: var(--wordmark);
  font-size: 0.98rem;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--gold-300);
  display: inline-flex;
  align-items: center;
  gap: 0.9em;
}
.eyebrow::before {
  content: "";
  width: 44px; height: 2px;
  background: var(--gold-400);
  opacity: 0.85;
}
.eyebrow.center { justify-content: center; }
.eyebrow.no-rule::before { display: none; }

h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.02; letter-spacing: -0.015em; }

.display {
  font-size: clamp(3.2rem, 7.9vw, 7.2rem);
  font-weight: 700;
  line-height: 0.96;
}
.h2 { font-size: clamp(2.4rem, 5vw, 4.7rem); font-weight: 700; line-height: 1.02; }
.lead { font-size: clamp(1.05rem, 1.4vw, 1.28rem); line-height: 1.7; color: var(--on-navy-soft); }
.lead-ink { color: var(--ink-soft); }

.serif-italic { font-style: italic; font-family: var(--serif); }

/* gold gradient text — with a bright sheen band that sweeps on scroll */
.gold-text {
  background: linear-gradient(100deg,
    #a87e3a 0%, #c0944a 22%, #d3ad68 38%,
    #f6e7bd 47%, #fffdf6 50%, #f1ddac 53%,
    #d3ad68 64%, #c0944a 80%, #a87e3a 100%);
  background-size: 260% 100%;
  background-position: var(--sheen, 50%) 0;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: 0.2em;
}

/* glossy light-sweep for serif titles on navy (legibility-safe: stays light) */
.gloss {
  background: linear-gradient(100deg,
    #d3d9e4 0%, #eef1f6 30%, #ffffff 48%, #ffffff 52%, #eef1f6 70%, #cfd6e2 100%);
  background-size: 260% 100%;
  background-position: var(--sheen, 50%) 0;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: 0.2em;
}

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
  padding: 1.05em 2em;
  border: none;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out);
}
.btn .arr { transition: transform 0.4s var(--ease-out); }
.btn:hover .arr { transform: translateX(5px); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; pointer-events: none; }

.btn-gold {
  background: var(--gold-grad);
  color: var(--navy-900);
  box-shadow: 0 10px 30px -12px rgba(211,173,104,0.6);
}
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -14px rgba(211,173,104,0.75); }

.btn-ghost {
  background: transparent;
  color: var(--on-navy);
  border: 1px solid var(--hairline);
}
.btn-ghost:hover { border-color: var(--gold-400); color: var(--gold-300); }

.btn-ink { background: var(--navy-800); color: var(--on-navy); }
.btn-ink:hover { transform: translateY(-3px); box-shadow: 0 16px 36px -16px rgba(10,26,46,0.6); }

/* underline text link */
.tlink {
  color: var(--gold-300);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding-bottom: 4px;
  background-image: var(--gold-line);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
}
.tlink .arr { transition: transform 0.4s var(--ease-out); }
.tlink:hover .arr { transform: translateX(5px); }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 1s var(--ease-out), transform 1s var(--ease-out); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  html { scroll-behavior: auto; }
}

/* gold hairline divider */
.rule-gold { height: 1px; background: var(--gold-line); border: none; }