/* KESSOR / គន្ធា — premium Cambodian SaaS theme */
:root {
  --kessor-green-50:  #eaf4ee;
  --kessor-green-100: #c8e2d2;
  --kessor-green-200: #93c5a8;
  --kessor-green-500: #1F6B4B;     /* primary deep green */
  --kessor-green-600: #195A3F;
  --kessor-green-700: #134330;
  --kessor-cream:     #F4E7C5;
  --kessor-cream-50:  #FBF6E7;
  --kessor-cream-100: #F8EFD3;
  --kessor-ink:       #0B221A;
  --kessor-ink-soft:  #2E3B33;
  --kessor-mute:      #6B7A72;

  --shadow-soft:   0 4px 14px rgba(19, 67, 48, 0.06), 0 1px 3px rgba(19, 67, 48, 0.04);
  --shadow-medium: 0 10px 30px rgba(19, 67, 48, 0.08), 0 2px 6px rgba(19, 67, 48, 0.05);
  --shadow-deep:   0 20px 60px rgba(19, 67, 48, 0.14), 0 4px 12px rgba(19, 67, 48, 0.08);

  --radius-card: 18px;
}

html, body { background: #fff; color: var(--kessor-ink); }

/* Khmer-first typography. Khmer slightly larger than English by default. */
body {
  font-family: 'Inter', 'Noto Sans Khmer', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-feature-settings: 'cv11', 'ss01';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.km {
  font-family: 'Noto Sans Khmer', 'Inter', system-ui, sans-serif;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.55;
}

.km-display {
  font-family: 'Noto Sans Khmer', 'Inter', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.005em;
}

/* Khmer scaled up vs English siblings */
h1 .km, h2 .km, h3 .km { display: block; }
h1 .en, h2 .en, h3 .en { display: block; opacity: .8; font-weight: 500; }

/* Brand utilities */
.bg-kessor-green   { background: var(--kessor-green-500); }
.bg-kessor-green-700 { background: var(--kessor-green-700); }
.bg-kessor-cream   { background: var(--kessor-cream); }
.bg-kessor-cream-50{ background: var(--kessor-cream-50); }
.text-kessor-green { color: var(--kessor-green-500); }
.text-kessor-ink   { color: var(--kessor-ink); }
.text-kessor-mute  { color: var(--kessor-mute); }
.border-kessor-green { border-color: var(--kessor-green-500); }
.ring-kessor-green:focus { outline: none; box-shadow: 0 0 0 4px rgba(31,107,75,.15); border-color: var(--kessor-green-500); }

.shadow-soft   { box-shadow: var(--shadow-soft); }
.shadow-medium { box-shadow: var(--shadow-medium); }
.shadow-deep   { box-shadow: var(--shadow-deep); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border-radius: 14px; padding: .9rem 1.4rem; font-weight: 600;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--kessor-green-500); color: #fff; box-shadow: var(--shadow-soft); }
.btn-primary:hover { background: var(--kessor-green-600); transform: translateY(-1px); box-shadow: var(--shadow-medium); }
.btn-primary:active { transform: translateY(0); }

.btn-cream { background: var(--kessor-cream); color: var(--kessor-green-700); }
.btn-cream:hover { background: var(--kessor-cream-100); transform: translateY(-1px); }

.btn-ghost { background: transparent; color: var(--kessor-green-700); border: 1px solid #DDE6E0; }
.btn-ghost:hover { background: var(--kessor-cream-50); border-color: var(--kessor-green-200); }

/* Cards */
.card {
  background: #fff;
  border: 1px solid #E8EFEA;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--shadow-medium); border-color: #CFE0D5; }

/* Subtle background pattern */
.bg-grid {
  background-image:
    radial-gradient(rgba(31,107,75,0.06) 1px, transparent 1px);
  background-size: 22px 22px;
}

.bg-cream-blob {
  background:
    radial-gradient(60% 50% at 12% 8%,  rgba(244,231,197,0.7) 0%, rgba(244,231,197,0) 60%),
    radial-gradient(45% 50% at 95% 12%, rgba(31,107,75,0.07) 0%, rgba(31,107,75,0) 60%),
    #ffffff;
}

/* Input */
.field {
  display: block; width: 100%;
  padding: .9rem 1rem; border-radius: 14px;
  background: #FBFCFB; border: 1px solid #E2EAE5;
  color: var(--kessor-ink); font-size: 0.95rem;
  transition: all .2s ease;
}
.field:focus { outline: none; background: #fff; border-color: var(--kessor-green-500); box-shadow: 0 0 0 4px rgba(31,107,75,.10); }
.field::placeholder { color: #94A39A; }

.label { display:block; font-size: .8rem; font-weight: 600; color: var(--kessor-ink-soft); margin-bottom: .4rem; letter-spacing: .01em; }

/* Pill / badge */
.pill {
  display: inline-flex; align-items: center; gap: .4rem;
  background: var(--kessor-cream-50);
  color: var(--kessor-green-700);
  border: 1px solid #EDE2BD;
  padding: .35rem .7rem; border-radius: 999px;
  font-size: .8rem; font-weight: 600;
}

/* Divider with subtle gradient */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, #DCE6DF, transparent);
}

/* Sticky mobile CTA */
.sticky-cta {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(12px);
  border-top: 1px solid #E5EEE9;
  padding: .75rem 1rem calc(.75rem + env(safe-area-inset-bottom));
  display: flex; gap: .5rem; z-index: 50;
}
@media (min-width: 1024px) { .sticky-cta { display: none; } }

/* FAQ */
details.faq {
  border: 1px solid #E8EFEA; background: #fff;
  border-radius: 16px; padding: 1rem 1.2rem; transition: all .2s ease;
}
details.faq[open] { border-color: var(--kessor-green-200); box-shadow: var(--shadow-soft); }
details.faq summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: flex-start; gap: 1rem; justify-content: space-between;
  font-weight: 600;
}
details.faq summary::-webkit-details-marker { display:none; }
details.faq .chev { transition: transform .25s ease; color: var(--kessor-green-500); flex-shrink: 0; margin-top: .15rem; }
details.faq[open] .chev { transform: rotate(180deg); }
details.faq .answer { padding-top: .8rem; color: var(--kessor-ink-soft); }

/* Step number circle */
.step-num {
  width: 36px; height: 36px; border-radius: 12px;
  background: var(--kessor-green-500); color: #fff;
  display:flex; align-items:center; justify-content:center;
  font-weight: 700;
  box-shadow: var(--shadow-soft);
}

/* Phone mockup */
.phone-frame {
  width: 280px; height: 580px;
  background: linear-gradient(180deg, #122c22, #0b1c15);
  border-radius: 42px; padding: 12px;
  box-shadow: 0 30px 80px rgba(11, 34, 26, .35), inset 0 0 0 1px rgba(255,255,255,.06);
  position: relative;
}
.phone-frame::before {
  content: ""; position: absolute; left: 50%; top: 18px; transform: translateX(-50%);
  width: 110px; height: 24px; background: #0b1c15; border-radius: 14px; z-index: 2;
}
.phone-screen {
  width: 100%; height: 100%; background: #fff; border-radius: 32px; overflow: hidden;
  display: flex; flex-direction: column;
}

/* Animations */
@keyframes float { 0%,100% { transform: translateY(0) } 50% { transform: translateY(-6px) } }
.animate-float { animation: float 4.5s ease-in-out infinite; }

@keyframes pulse-soft { 0%,100% { opacity: .7 } 50% { opacity: 1 } }
.animate-pulse-soft { animation: pulse-soft 2.4s ease-in-out infinite; }

/* Header / nav */
.nav-link {
  color: var(--kessor-ink-soft); font-weight: 500; padding: .4rem .7rem; border-radius: 10px;
  transition: all .15s ease;
}
.nav-link:hover { color: var(--kessor-green-700); background: var(--kessor-cream-50); }

/* ─── Language toggle ─── */
/* Behaviour:
   - body.lang-km (default) shows .km / .tx-km, hides .tx-en
   - body.lang-en shows .tx-en / English content, hides .km / .tx-km
   - .tx-bi is shown in both
*/
body.lang-km .tx-en { display: none !important; }
body.lang-en .km    { display: none !important; }
body.lang-en .tx-km { display: none !important; }

/* In English mode, Khmer-display headings should still feel premium */
body.lang-en .km-display { font-family: 'Inter', system-ui, sans-serif; font-weight: 800; letter-spacing: -.012em; }

/* Trim leading "/ " separators when only English is shown */
body.lang-en .tx-en::before { content: none; }

/* Pill-style toggle */
.lang-toggle {
  display: inline-flex; padding: 3px;
  background: var(--kessor-cream-50);
  border: 1px solid #EDE2BD;
  border-radius: 999px;
  font-size: 12px; font-weight: 700;
  user-select: none;
}
.lang-toggle button {
  padding: 5px 11px; border-radius: 999px;
  color: var(--kessor-mute);
  transition: all .18s ease;
  letter-spacing: .01em;
}
.lang-toggle button.is-active {
  background: #fff;
  color: var(--kessor-green-700);
  box-shadow: 0 1px 3px rgba(11, 34, 26, .06);
}
.lang-toggle button:not(.is-active):hover { color: var(--kessor-green-700); }