/* =====================================================
   OVO Energy Asia — Global Stylesheet
   ===================================================== */
:root {
  --green-900: #0A2C21;
  --green-800: #0F3D2E;
  --green-700: #144F3C;
  --green-500: #1F7A5C;
  --navy-900: #06132B;
  --navy-800: #0B1E3F;
  --navy-700: #14315F;
  --lime: #DFFF3A;
  --lime-soft: #EEFFA1;
  --amber: #F5C518;
  --paper: #FAF8F3;
  --paper-2: #F1EEE5;
  --line: #E6E1D4;
  --ink: #121417;
  --ink-2: #3B4046;
  --muted: #6B6F76;
  --card: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(6,19,43,.06);
  --shadow-md: 0 8px 24px -8px rgba(6,19,43,.14);
  --shadow-lg: 0 24px 60px -20px rgba(6,19,43,.22);
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --f-display: 'Playfair Display', Georgia, serif;
  --f-sans: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max: 1240px;
}

[data-theme="dark"] {
  --paper: #0A1410;
  --paper-2: #0F1D17;
  --line: #1F2E27;
  --ink: #F4F6EF;
  --ink-2: #C7CEC6;
  --muted: #8A928B;
  --card: #0F1D17;
  --green-800: #DFFF3A;
  --green-700: #B7E42A;
  --navy-800: #A9BAD9;
  --shadow-md: 0 8px 24px -8px rgba(0,0,0,.6);
  --shadow-lg: 0 24px 60px -20px rgba(0,0,0,.8);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--f-sans); color: var(--ink);
  background: var(--paper);
  font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p { color: var(--ink-2); }
::selection { background: var(--lime); color: var(--green-900); }

/* Focus ring */
:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 3px;
  border-radius: 6px;
}

/* Container */
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Typography */
h1, h2, h3, h4 { font-family: var(--f-display); color: var(--ink); letter-spacing: -0.01em; margin: 0 0 .5em; line-height: 1.08; font-weight: 600; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--f-sans); text-transform: uppercase;
  letter-spacing: .18em; font-size: 12px; font-weight: 700;
  color: var(--green-800); padding: 6px 12px;
  background: color-mix(in oklab, var(--green-800) 8%, transparent);
  border-radius: var(--radius-pill);
}
.eyebrow::before { content: ''; width: 6px; height: 6px; background: var(--lime); border-radius: 50%; box-shadow: 0 0 0 4px color-mix(in oklab, var(--lime) 30%, transparent); }

.h-display { font-size: clamp(2.4rem, 5.4vw, 4.6rem); }
.h-lg { font-size: clamp(1.9rem, 3.4vw, 2.9rem); }
.h-md { font-size: clamp(1.4rem, 2.2vw, 1.75rem); }
.lead { font-size: clamp(1.05rem, 1.25vw, 1.18rem); color: var(--ink-2); max-width: 62ch; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: var(--radius-pill);
  font-weight: 700; font-size: 15px;
  border: 1px solid transparent;
  transition: transform .2s ease, background-color .2s ease, color .2s ease, box-shadow .2s ease, border-color .2s ease;
  cursor: pointer; white-space: nowrap;
}
.btn-primary { background: var(--green-800); color: #F4FFF9; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); background: var(--green-700); }
.btn-accent { background: var(--lime); color: var(--green-900); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -12px color-mix(in oklab, var(--lime) 60%, transparent); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); }
[data-theme="dark"] .btn-primary { background: var(--lime); color: var(--green-900); }
[data-theme="dark"] .btn-primary:hover { background: var(--lime-soft); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--paper) 85%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.site-header.scrolled { border-color: var(--line); background: color-mix(in oklab, var(--paper) 94%, transparent); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; gap: 16px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-display); font-weight: 600; font-size: 22px;
  color: var(--ink);
}
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: radial-gradient(circle at 30% 30%, var(--lime), var(--green-800) 70%);
  position: relative; display: inline-block;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.06);
}
.brand-mark::after {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 34 34'><path d='M17 6 L23 17 L18 17 L20 26 L11 15 L16 15 Z' fill='%230A2C21'/></svg>") center/62% no-repeat;
}
.brand-suffix { font-family: var(--f-sans); font-weight: 500; font-size: 12px; letter-spacing: .18em; color: var(--muted); text-transform: uppercase; margin-left: 4px; }

.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; padding: 0; margin: 0; }
.nav-links a { padding: 10px 14px; border-radius: 10px; font-weight: 600; font-size: 14.5px; color: var(--ink-2); transition: color .2s ease, background .2s ease; }
.nav-links a:hover { color: var(--ink); background: color-mix(in oklab, var(--ink) 5%, transparent); }
.nav-links a[aria-current="page"] { color: var(--green-800); background: color-mix(in oklab, var(--green-800) 8%, transparent); }
[data-theme="dark"] .nav-links a[aria-current="page"] { color: var(--lime); }

.header-cta { display: flex; align-items: center; gap: 10px; }
.icon-btn {
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px; border: 1px solid var(--line); background: transparent; cursor: pointer;
  color: var(--ink); transition: background .2s ease, border-color .2s ease;
}
.icon-btn:hover { background: color-mix(in oklab, var(--ink) 5%, transparent); }
.menu-toggle { display: none; }

/* Hero */
.hero {
  position: relative; padding: clamp(56px, 8vw, 96px) 0 clamp(72px, 9vw, 120px);
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: -10% -10% auto -10%; height: 80%;
  background:
    radial-gradient(60% 40% at 15% 20%, color-mix(in oklab, var(--lime) 24%, transparent), transparent 70%),
    radial-gradient(50% 40% at 90% 30%, color-mix(in oklab, var(--green-800) 22%, transparent), transparent 65%);
  z-index: 0; pointer-events: none;
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero-copy .eyebrow { margin-bottom: 22px; }
.hero-copy h1 { font-size: clamp(2.6rem, 5.6vw, 4.8rem); }
.hero-copy h1 em { font-style: italic; color: var(--green-800); }
[data-theme="dark"] .hero-copy h1 em { color: var(--lime); }
.hero-copy .lead { margin: 20px 0 32px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 28px; margin-top: 40px; flex-wrap: wrap; }
.hero-meta .item { display: flex; flex-direction: column; }
.hero-meta .num { font-family: var(--f-display); font-size: 2rem; color: var(--ink); }
.hero-meta .label { font-size: 13px; color: var(--muted); letter-spacing: .06em; text-transform: uppercase; }

.hero-visual { position: relative; aspect-ratio: 4 / 4.6; }
.hero-visual svg { width: 100%; height: 100%; filter: drop-shadow(0 20px 40px rgba(6,19,43,.14)); }

/* Sections */
section { padding: clamp(72px, 8vw, 120px) 0; }
.section-head { max-width: 780px; margin: 0 auto clamp(40px, 5vw, 64px); text-align: center; }
.section-head.left { text-align: left; margin-left: 0; }
.section-head h2 { margin-top: 14px; }

/* Grids */
.grid { display: grid; gap: 28px; }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }

/* Cards */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px; position: relative;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: color-mix(in oklab, var(--green-800) 30%, var(--line)); }
.card h3 { font-family: var(--f-sans); font-size: 1.2rem; font-weight: 700; margin-top: 20px; letter-spacing: -.01em; }
.card p { font-size: 15px; margin: 8px 0 16px; }
.card .icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: color-mix(in oklab, var(--green-800) 10%, transparent);
  color: var(--green-800); display: inline-flex; align-items: center; justify-content: center;
}
[data-theme="dark"] .card .icon { color: var(--lime); background: color-mix(in oklab, var(--lime) 12%, transparent); }
.card .link { font-weight: 700; color: var(--green-800); font-size: 14px; letter-spacing: .04em; }
[data-theme="dark"] .card .link { color: var(--lime); }
.card.dark { background: var(--green-900); color: var(--paper); border-color: transparent; }
.card.dark h3, .card.dark p { color: var(--paper); }
.card.dark .icon { background: color-mix(in oklab, var(--lime) 18%, transparent); color: var(--lime); }

/* Stats */
.stats {
  background: var(--green-900); color: var(--paper); border-radius: var(--radius-lg);
  padding: clamp(40px, 5vw, 64px); position: relative; overflow: hidden;
}
.stats::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(30% 40% at 90% 10%, color-mix(in oklab, var(--lime) 20%, transparent), transparent 70%),
    radial-gradient(30% 40% at 5% 90%, color-mix(in oklab, var(--green-500) 40%, transparent), transparent 70%);
  pointer-events: none;
}
.stats-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat .num { font-family: var(--f-display); font-size: clamp(2.4rem, 4vw, 3.6rem); color: var(--lime); line-height: 1; }
.stat .label { color: color-mix(in oklab, var(--paper) 80%, transparent); margin-top: 10px; font-size: 14px; letter-spacing: .04em; }

/* Testimonials */
.testimonial {
  padding: 32px; border-radius: var(--radius); background: var(--card);
  border: 1px solid var(--line);
}
.testimonial blockquote { margin: 0; font-family: var(--f-display); font-size: 1.25rem; line-height: 1.5; color: var(--ink); }
.testimonial .who { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
.testimonial .avatar { width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, var(--green-500), var(--navy-700)); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-family: var(--f-sans); }
.testimonial .who .n { font-weight: 700; font-size: 14px; }
.testimonial .who .r { font-size: 13px; color: var(--muted); }
.demo-badge { position: absolute; top: 16px; right: 16px; font-size: 10px; letter-spacing: .12em; text-transform: uppercase; background: var(--lime); color: var(--green-900); padding: 4px 8px; border-radius: 999px; font-weight: 800; }

/* News */
.news-card { display: flex; flex-direction: column; height: 100%; }
.news-card .thumb { border-radius: var(--radius-sm); aspect-ratio: 16 / 10; overflow: hidden; border: 1px solid var(--line); }
.news-card .meta { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--muted); margin-top: 16px; text-transform: uppercase; letter-spacing: .12em; }
.news-card h3 { font-family: var(--f-sans); font-size: 1.1rem; margin: 8px 0; }

/* Timeline */
.timeline { position: relative; margin-left: 12px; padding-left: 30px; border-left: 2px dashed var(--line); }
.timeline .step { position: relative; padding: 8px 0 30px; }
.timeline .step::before { content: ''; position: absolute; left: -39px; top: 12px; width: 14px; height: 14px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 4px color-mix(in oklab, var(--lime) 30%, transparent); }
.timeline h4 { font-family: var(--f-sans); font-size: 1.05rem; margin-bottom: 4px; }
.timeline p { margin: 0; font-size: 14.5px; }

/* Split content */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.reverse { direction: rtl; }
.split.reverse > * { direction: ltr; }

/* Notice */
.notice {
  border: 1px dashed color-mix(in oklab, var(--amber) 65%, var(--line));
  background: color-mix(in oklab, var(--amber) 8%, transparent);
  padding: 20px 24px; border-radius: var(--radius);
  font-size: 14.5px; color: var(--ink-2);
}
.notice strong { color: var(--ink); font-weight: 700; }

/* FAQ */
.faq-item { border-top: 1px solid var(--line); padding: 4px 0; }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-question {
  width: 100%; text-align: left; background: transparent; border: 0; cursor: pointer;
  font-family: var(--f-sans); font-weight: 600; font-size: 1.05rem; color: var(--ink);
  padding: 22px 40px 22px 0; position: relative;
}
.faq-question::after {
  content: '+'; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-family: var(--f-sans); font-weight: 400; font-size: 22px; color: var(--green-800); transition: transform .3s ease;
}
[data-theme="dark"] .faq-question::after { color: var(--lime); }
.faq-item.open .faq-question::after { transform: translateY(-50%) rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-answer p { padding-bottom: 22px; margin: 0; font-size: 15px; }

/* Forms */
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.field label { font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); }
.field input, .field textarea, .field select {
  width: 100%; padding: 14px 16px; border: 1px solid var(--line); background: var(--card); color: var(--ink);
  border-radius: 12px; font: inherit; font-size: 15px; transition: border-color .2s ease, box-shadow .2s ease;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--green-800); outline: none; box-shadow: 0 0 0 4px color-mix(in oklab, var(--green-800) 15%, transparent);
}
.field .err, .field .form-error { color: #B03A2E; font-size: 13px; min-height: 16px; }
[data-theme="dark"] .field .err, [data-theme="dark"] .field .form-error { color: #FF9E8B; }

/* Newsletter */
.news-form { display: flex; gap: 8px; flex-wrap: wrap; }
.news-form input {
  flex: 1; min-width: 220px; padding: 14px 18px; border-radius: var(--radius-pill);
  border: 1px solid var(--line); background: var(--card); color: var(--ink); font: inherit;
}
.form-success { color: var(--green-800); font-weight: 700; margin-top: 10px; display: none; font-size: 14px; }
[data-theme="dark"] .form-success { color: var(--lime); }

/* Contact block */
.contact-info { display: grid; gap: 20px; }
.contact-info .row { display: flex; align-items: flex-start; gap: 16px; padding: 20px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--card); }
.contact-info .icon { width: 42px; height: 42px; border-radius: 12px; background: color-mix(in oklab, var(--green-800) 10%, transparent); color: var(--green-800); display: inline-flex; align-items: center; justify-content: center; flex: none; }
[data-theme="dark"] .contact-info .icon { color: var(--lime); background: color-mix(in oklab, var(--lime) 10%, transparent); }
.contact-info .label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .12em; font-weight: 700; }
.contact-info strong { font-family: var(--f-sans); }

.map-placeholder {
  aspect-ratio: 16 / 10; border-radius: var(--radius); border: 1px solid var(--line); background: var(--paper-2);
  display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative;
}
.map-placeholder svg { width: 100%; height: 100%; }
.map-placeholder .label { position: absolute; bottom: 14px; left: 14px; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; font-size: 13px; font-weight: 700; }

/* CTA banner */
.cta-banner {
  background: var(--navy-900); color: #F1F4FB; border-radius: var(--radius-lg);
  padding: clamp(40px, 5vw, 64px); text-align: center; position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(40% 60% at 100% 0%, color-mix(in oklab, var(--lime) 22%, transparent), transparent 60%),
              radial-gradient(30% 50% at 0% 100%, color-mix(in oklab, var(--green-500) 40%, transparent), transparent 60%);
  pointer-events: none;
}
.cta-banner h2 { color: #fff; }
.cta-banner p { color: color-mix(in oklab, #F1F4FB 80%, transparent); max-width: 60ch; margin: 8px auto 26px; }
.cta-banner .btn-primary { background: var(--lime); color: var(--green-900); }
.cta-banner .btn-primary:hover { background: var(--lime-soft); }
.cta-banner > * { position: relative; }

/* Footer */
.site-footer { background: var(--green-900); color: color-mix(in oklab, var(--paper) 82%, transparent); margin-top: 40px; padding: 72px 0 24px; }
.site-footer h4 { color: #fff; font-family: var(--f-sans); font-size: 14px; text-transform: uppercase; letter-spacing: .16em; margin-bottom: 18px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand p { color: color-mix(in oklab, var(--paper) 70%, transparent); font-size: 14.5px; max-width: 32ch; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; font-size: 14.5px; }
.footer-links a { color: color-mix(in oklab, var(--paper) 78%, transparent); transition: color .2s ease; }
.footer-links a:hover { color: var(--lime); }
.socials { display: flex; gap: 10px; }
.socials a { width: 40px; height: 40px; border-radius: 12px; border: 1px solid color-mix(in oklab, var(--paper) 20%, transparent); display: inline-flex; align-items: center; justify-content: center; color: var(--paper); transition: background .2s ease, border-color .2s ease; }
.socials a:hover { background: color-mix(in oklab, var(--lime) 20%, transparent); border-color: var(--lime); color: var(--lime); }
.footer-bottom { border-top: 1px solid color-mix(in oklab, var(--paper) 15%, transparent); margin-top: 48px; padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; font-size: 13px; color: color-mix(in oklab, var(--paper) 60%, transparent); }
.footer-bottom a:hover { color: var(--lime); }

/* Back to top */
.back-to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 60;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--green-800); color: #F4FFF9; border: 0; cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0; transform: translateY(12px); pointer-events: none;
  transition: opacity .2s ease, transform .2s ease, background .2s ease;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { background: var(--green-700); }
[data-theme="dark"] .back-to-top { background: var(--lime); color: var(--green-900); }

/* Reveal animations */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal.delay-1 { transition-delay: .08s; }
.reveal.delay-2 { transition-delay: .16s; }
.reveal.delay-3 { transition-delay: .24s; }

/* Page hero (interior) */
.page-hero { padding: clamp(64px, 7vw, 96px) 0 clamp(40px, 5vw, 64px); position: relative; }
.page-hero .eyebrow { margin-bottom: 18px; }
.page-hero h1 { font-size: clamp(2.2rem, 4.8vw, 3.8rem); max-width: 20ch; }
.page-hero .lead { margin-top: 18px; }
.page-hero::after {
  content: ''; position: absolute; inset: auto 0 -1px 0; height: 1px; background: linear-gradient(to right, transparent, var(--line), transparent);
}

/* Utility */
.text-muted { color: var(--muted); }
.hidden { display: none; }
.center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

/* Responsive */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 460px; margin: 0 auto; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links {
    position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: stretch;
    gap: 6px; padding: 20px; background: var(--paper); border-bottom: 1px solid var(--line);
    transform: translateY(-120%); transition: transform .3s ease; z-index: 40;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 14px 16px; font-size: 16px; }
  .menu-toggle { display: inline-flex; }
  .header-cta .btn { display: none; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-meta { gap: 20px; }
  .brand-suffix { display: none; }
}