/*
Theme Name: Referall
Theme URI: https://referall.sg
Author: Referall Pte. Ltd.
Description: Custom theme for Referall — a Singapore referral-driven loan comparison and rewards platform.
Version: 1.0
Requires PHP: 7.4
Text Domain: referall
*/

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Public Sans', -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
button { font: inherit; cursor: pointer; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

/* ---------- Tokens ---------- */
:root {
  --ink: #16292B;
  --ink-soft: #4B5C5D;
  --paper: #F6F7F3;
  --paper-raised: #FFFFFF;
  --line: #DFE3DC;

  --coral: #FF4D49;
  --coral-deep: #D8332F;
  --coral-ink: #7A1512;

  --teal: #3CC1AC;
  --teal-deep: #26937F;
  --teal-wash: #E4F5F1;

  --gold: #F0B23A;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Public Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --container: 1160px;
  --radius: 22px;
}

/* ---------- Layout helpers ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 28px; }
section { padding: 108px 0; position: relative; scroll-margin-top: 90px; }
@media (max-width: 780px) { section { padding: 72px 0; } }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-deep);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--coral);
}

h2.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  max-width: 15ch;
}

.lede {
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 52ch;
  margin-top: 20px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15.5px;
  border: 1.5px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}
.btn-primary {
  background: var(--coral);
  color: #fff;
  box-shadow: 0 10px 24px -10px rgba(216, 51, 47, 0.55);
}
.btn-primary:hover { background: var(--coral-deep); transform: translateY(-2px); }
.btn-outline {
  border-color: var(--ink);
  color: var(--ink);
}
.btn-outline:hover { border-color: var(--teal-deep); color: var(--teal-deep); transform: translateY(-2px); }
a:focus-visible, button:focus-visible {
  outline: 2.5px solid var(--teal-deep);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(246, 247, 243, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
  position: relative;
}
.site-logo img { height: 46px; width: auto; }
.primary-nav { display: flex; align-items: center; gap: 34px; }
.primary-nav ul { display: flex; gap: 30px; }
.primary-nav a {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-soft);
  transition: color 0.15s ease;
}
.primary-nav a:hover { color: var(--coral); }
.primary-nav .nav-cta { display: none; }
.header-cta { display: flex; align-items: center; gap: 14px; }
.header-cta .btn { padding: 12px 24px; font-size: 14.5px; }
.nav-toggle {
  display: none;
  background: none;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
}

@media (max-width: 900px) {
  .header-cta > .btn { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-toggle span,
  .nav-toggle span::before,
  .nav-toggle span::after {
    content: '';
    display: block;
    width: 18px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    position: relative;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .nav-toggle span::before { position: absolute; top: -6px; left: 0; }
  .nav-toggle span::after { position: absolute; top: 6px; left: 0; }
  .nav-toggle.is-active span { background: transparent; }
  .nav-toggle.is-active span::before { transform: translateY(6px) rotate(45deg); }
  .nav-toggle.is-active span::after { transform: translateY(-6px) rotate(-45deg); }

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper-raised);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 30px -20px rgba(22,41,43,0.25);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .primary-nav.is-open { max-height: 420px; }
  .primary-nav ul { flex-direction: column; gap: 0; padding: 10px 28px; }
  .primary-nav ul li { border-bottom: 1px solid var(--line); }
  .primary-nav ul li:last-child { border-bottom: none; }
  .primary-nav a { display: block; padding: 15px 0; }
  .primary-nav .nav-cta { display: inline-flex; margin: 16px 28px 24px; }
}

/* ---------- Hero ---------- */
.hero { padding-top: 84px; padding-bottom: 40px; overflow: hidden; }
.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.015em;
}
.hero h1 em {
  font-style: italic;
  color: var(--coral);
}
.hero-actions { display: flex; gap: 16px; margin-top: 38px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 46px;
  display: flex;
  gap: 34px;
  flex-wrap: wrap;
}
.hero-meta div { font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); }
.hero-meta strong { display: block; font-family: var(--font-display); font-size: 24px; color: var(--ink); font-weight: 600; }

/* ---- Signature: the referral loop ---- */
.loop-figure { position: relative; aspect-ratio: 1/1; max-width: 460px; margin: 0 auto; }
.loop-svg { width: 100%; height: 100%; }
.loop-track { fill: none; stroke: var(--line); stroke-width: 1.5; }
.loop-arc-coral { fill: none; stroke: var(--coral); stroke-width: 3; stroke-linecap: round; }
.loop-arc-teal { fill: none; stroke: var(--teal); stroke-width: 3; stroke-linecap: round; }
.loop-dot {
  fill: var(--gold);
  filter: drop-shadow(0 3px 6px rgba(240,178,58,0.55));
}
.loop-orbit { animation: orbit 9s linear infinite; transform-origin: 230px 230px; }
@keyframes orbit { to { transform: rotate(360deg); } }
.loop-node-card {
  position: absolute;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 14px 30px -18px rgba(22,41,43,0.35);
}
.loop-node-card.n1 { top: 4%; left: 50%; transform: translateX(-50%); color: var(--coral-deep); }
.loop-node-card.n2 { bottom: 12%; left: 2%; color: var(--teal-deep); }
.loop-node-card.n3 { bottom: 12%; right: 2%; color: var(--ink); }

/* ---------- About ---------- */
.about .container { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 64px; }
.about-copy p + p { margin-top: 16px; color: var(--ink-soft); }
.about-stats { display: flex; flex-direction: column; gap: 22px; margin-top: 30px; }
.about-stat { display: flex; gap: 16px; align-items: flex-start; padding: 18px 0; border-top: 1px solid var(--line); }
.about-stat svg { flex-shrink: 0; margin-top: 3px; }
.about-stat h4 { font-family: var(--font-display); font-size: 17px; font-weight: 600; }
.about-stat p { color: var(--ink-soft); font-size: 15px; margin-top: 4px; }

/* ---------- Steps ---------- */
.steps { background: var(--paper-raised); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps-head { max-width: 640px; margin-bottom: 60px; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; position: relative; }
.steps-grid::before {
  content: '';
  position: absolute;
  top: 34px; left: 12%; right: 12%;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px);
}
.step { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 26px; }
.step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #fff;
  background: var(--ink);
  width: 34px; height: 34px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
}
.step:nth-child(1) .step-num { background: var(--coral); }
.step:nth-child(2) .step-num { background: var(--teal-deep); }
.step:nth-child(3) .step-num { background: var(--gold); color: var(--ink); }
.step h3 { font-family: var(--font-display); font-size: 21px; font-weight: 600; margin-bottom: 10px; }
.step p { color: var(--ink-soft); font-size: 15.5px; }

/* ---------- Services ---------- */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 56px; }
.service-card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.service-card:hover { transform: translateY(-5px); box-shadow: 0 20px 40px -24px rgba(22,41,43,0.35); }
.service-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.service-card:nth-child(1) .service-icon { background: var(--teal-wash); }
.service-card:nth-child(2) .service-icon { background: #FFEAE9; }
.service-card:nth-child(3) .service-icon { background: #FDF2DD; }
.service-card:nth-child(4) .service-icon { background: var(--teal-wash); }
.service-card h3 { font-family: var(--font-display); font-size: 18.5px; font-weight: 600; margin-bottom: 10px; }
.service-card p { color: var(--ink-soft); font-size: 14.5px; }

/* ---------- Differentiators ---------- */
.differentiators { background: var(--ink); color: var(--paper); }
.differentiators .eyebrow { color: var(--teal); }
.differentiators .eyebrow::before { background: var(--coral); }
.differentiators .section-title { color: #fff; }
.differentiators .lede { color: rgba(246,247,243,0.72); }
.diff-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.diff-chart { width: 220px; flex-shrink: 0; }
.diff-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin-top: 56px; background: rgba(246,247,243,0.14); border-radius: var(--radius); overflow: hidden; }
.diff-card { background: var(--ink); padding: 34px; }
.diff-card h4 { font-family: var(--font-display); font-size: 19px; font-weight: 600; color: #fff; display: flex; align-items: center; gap: 12px; }
.diff-card h4 svg { flex-shrink: 0; }
.diff-card p { margin-top: 12px; color: rgba(246,247,243,0.68); font-size: 15px; }

/* ---------- Growth roadmap ---------- */
.roadmap-path { margin-top: 70px; }
.roadmap-svg { width: 100%; height: auto; }
.roadmap-label { font-family: var(--font-mono); font-size: 12.5px; }

/* ---------- Stats ---------- */
.stats { background: var(--teal-wash); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; margin-top: 54px; }
.stat-card { text-align: left; }
.stat-num { font-family: var(--font-display); font-size: clamp(38px, 4vw, 54px); font-weight: 600; color: var(--coral-deep); line-height: 1; }
.stat-label { margin-top: 12px; color: var(--ink-soft); font-size: 14.5px; max-width: 22ch; }

.about-illustration { width: 100%; max-width: 320px; margin-top: 40px; }

/* ---------- Platform preview ---------- */
.platform-preview { background: var(--paper-raised); }
.platform-preview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.mockup-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 26px;
  box-shadow: 0 30px 60px -30px rgba(22,41,43,0.3);
}
.mockup-chrome { display: flex; gap: 7px; margin-bottom: 20px; }
.mockup-chrome span { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.mockup-row { display: grid; grid-template-columns: 84px 1fr 74px; align-items: center; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.mockup-bank { font-family: var(--font-mono); font-size: 12px; font-weight: 600; padding: 7px 10px; border-radius: 10px; text-align: center; }
.mockup-bar { height: 8px; border-radius: 6px; background: var(--line); overflow: hidden; }
.mockup-bar span { display: block; height: 100%; border-radius: 6px; }
.mockup-tag { font-family: var(--font-mono); font-size: 12.5px; font-weight: 600; text-align: right; color: var(--ink-soft); }
.mockup-cta {
  margin-top: 20px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 12px;
  padding: 13px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ---------- Contact ---------- */
.contact { background: var(--paper-raised); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.contact-solo { max-width: 620px; }
.contact-title { margin-bottom: 32px; }
.form-message {
  padding: 14px 18px;
  border-radius: 14px;
  font-size: 14.5px;
  font-weight: 600;
  margin-bottom: 24px;
}
.form-message.success { background: var(--teal-wash); color: var(--teal-deep); }
.form-message.error { background: #FFEAE9; color: var(--coral-deep); }

.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field label { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.04em; color: var(--ink-soft); }
.form-field input, .form-field textarea {
  font-family: var(--font-body);
  font-size: 15.5px;
  color: var(--ink);
  background: var(--paper);
  border: 1.5px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  transition: border-color 0.15s ease;
}
.form-field input:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--teal-deep);
}
.form-field textarea { resize: vertical; min-height: 130px; }
.hp-field { position: absolute; left: -9999px; top: -9999px; }
.contact-form .btn { align-self: flex-start; border: none; }

@media (max-width: 620px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--coral);
  border-radius: 32px;
  margin: 0 28px;
  padding: 70px 60px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  background-image: radial-gradient(circle at 88% 18%, rgba(255,255,255,0.18), transparent 45%);
}
.cta-banner h2 { font-family: var(--font-display); font-size: clamp(28px,3.4vw,40px); font-weight: 600; max-width: 14ch; }
.cta-banner .btn-primary { background: #fff; color: var(--coral-deep); box-shadow: none; }
.cta-banner .btn-primary:hover { background: var(--ink); color: #fff; }
.cta-banner .btn-outline { border-color: rgba(255,255,255,0.6); color: #fff; }
.cta-banner .btn-outline:hover { border-color: #fff; color: #fff; }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-footer { padding: 80px 0 40px; }
.footer-top { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 50px; border-bottom: 1px solid var(--line); }
.footer-brand img { height: 40px; margin-bottom: 16px; }
.footer-brand p { color: var(--ink-soft); font-size: 14.5px; max-width: 30ch; }
.footer-col h5 { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { font-size: 14.5px; color: var(--ink); }
.footer-col a:hover { color: var(--coral); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 26px; font-size: 13.5px; color: var(--ink-soft); flex-wrap: wrap; gap: 12px; }

/* ---------- Generic page/content (non front-page) ---------- */
.page-hero { padding: 70px 0 20px; }
.page-hero h1 { font-family: var(--font-display); font-size: clamp(32px,4vw,48px); font-weight: 600; }
.entry-content { max-width: 760px; }
.entry-content p { color: var(--ink-soft); margin-bottom: 18px; }
.entry-content h2 { font-family: var(--font-display); font-size: 26px; margin: 34px 0 14px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .loop-figure { max-width: 340px; margin-top: 20px; }
  .about .container { grid-template-columns: 1fr; }
  .about-illustration { max-width: 260px; margin: 28px auto 0; }
  .platform-preview-grid { grid-template-columns: 1fr; }
  .diff-head { flex-direction: column; align-items: flex-start; }
  .diff-chart { width: 180px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .diff-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; row-gap: 34px; }
}
@media (max-width: 620px) {
  .steps-grid { grid-template-columns: 1fr; }
  .steps-grid::before { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .cta-banner { flex-direction: column; align-items: flex-start; padding: 44px 30px; margin: 0 16px; }
  .footer-top { grid-template-columns: 1fr; }
  .hero-meta { gap: 24px; }
}