/* ProofLayer — brand-matched to thelanguagestudio.sg
   Fonts: Lato (body) + Montserrat (display/heading), per TLS Kadence theme.
   Primary CTA: #1768ea (TLS palette button).
   Inks: #373a3c headings, #444 body, #777 muted.    */

@import url('https://fonts.googleapis.com/css2?family=Lato:wght@400;700&family=Montserrat:wght@300;400;500;700&display=swap');

:root {
  --bg: #ffffff;
  --bg-alt: #f7f8fa;
  --ink: #373a3c;
  --ink-soft: #444444;
  --muted: #777777;
  --rule: #e3e6e8;
  --accent: #1768ea;
  --accent-hover: #0f4fb8;
  --accent-ink: #ffffff;
  --warn: #c0392b;
  --ok: #1f7a4d;
  --code-bg: #f1f3f5;
  --shadow-sm: 0 1px 2px rgba(23,104,234,.04);
  --shadow:    0 2px 6px rgba(23,104,234,.06), 0 12px 32px rgba(15,30,50,.05);
  --max-w: 760px;
  --display-font: 'Montserrat', system-ui, -apple-system, sans-serif;
  --body-font:    'Lato', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-soft);
  font: 16px/1.6 var(--body-font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent-hover); text-decoration: underline; text-underline-offset: 3px; }

main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 20px 96px;
}

header {
  border-bottom: 1px solid var(--rule);
  padding: 18px 20px;
  background: #fff;
}
header .wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
header h1 {
  font-family: var(--display-font);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
  letter-spacing: -.01em;
}
header h1 .muted { font-weight: 300; }
header nav a {
  font-family: var(--display-font);
  font-size: 14px;
  font-weight: 500;
  margin-left: 24px;
  color: var(--muted);
  letter-spacing: .02em;
  text-transform: uppercase;
}
header nav a:hover { color: var(--accent); text-decoration: none; }

h1.page-title {
  font-family: var(--display-font);
  font-size: 36px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.02em;
  line-height: 1.15;
  margin: 0 0 12px;
}
@media (max-width: 540px) { h1.page-title { font-size: 28px; } }

h2, h3 { font-family: var(--display-font); color: var(--ink); font-weight: 700; letter-spacing: -.01em; }
h2 { font-size: 22px; margin: 32px 0 12px; }
h3 { font-size: 18px; margin: 24px 0 8px; }

.lede {
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 0 36px;
  max-width: 600px;
}

.card {
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 28px;
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s;
}
.card:hover { box-shadow: var(--shadow); }
.card h2 { font-size: 20px; margin: 0 0 8px; }

label {
  display: block;
  font-family: var(--display-font);
  font-weight: 500;
  font-size: 14px;
  color: var(--ink);
  letter-spacing: .01em;
  margin: 18px 0 6px;
}

input[type="email"],
input[type="text"],
select,
textarea {
  width: 100%;
  padding: 11px 14px;
  font-size: 16px;
  font-family: var(--body-font);
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  transition: border-color .15s, box-shadow .15s;
}
textarea { min-height: 180px; resize: vertical; line-height: 1.5; }
textarea:focus, input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(23,104,234,.15);
}

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 540px) { .row { grid-template-columns: 1fr; } }

.tier-display {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  border-radius: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}
.tier-display strong { font-size: 20px; color: var(--ink); font-family: var(--display-font); }
.tier-display.over-limit { background: #fdf3f0; border-color: #f0c2b8; color: var(--warn); }

button.primary, .button.primary, a.button.primary {
  display: inline-block;
  padding: 13px 28px;
  font-size: 15px;
  font-family: var(--display-font);
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--accent-ink);
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  margin-top: 24px;
  text-decoration: none;
  transition: background .15s, transform .05s;
  box-shadow: 0 1px 2px rgba(23,104,234,.2);
}
button.primary:disabled { opacity: 0.5; cursor: wait; }
button.primary:hover:not(:disabled), a.button.primary:hover { background: var(--accent-hover); text-decoration: none; }
button.primary:active:not(:disabled) { transform: translateY(1px); }

button.link {
  background: none; border: 0; color: var(--accent);
  cursor: pointer; font: inherit; padding: 0;
}
button.link:hover { color: var(--accent-hover); text-decoration: underline; }

.error {
  margin: 18px 0;
  padding: 12px 16px;
  background: #fdf3f0;
  border-left: 3px solid var(--warn);
  border-radius: 4px;
  color: #6b2d22;
  font-size: 14px;
}
.success {
  margin: 18px 0;
  padding: 12px 16px;
  background: #ecf6f1;
  border-left: 3px solid var(--ok);
  border-radius: 4px;
  color: #1f4d34;
  font-size: 14px;
}

.tier-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 16px 0 0;
}
.tier-table th, .tier-table td {
  text-align: left;
  padding: 10px 4px;
  border-bottom: 1px solid var(--rule);
}
.tier-table th {
  font-family: var(--display-font);
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: .05em;
}

footer {
  border-top: 1px solid var(--rule);
  padding: 32px 20px;
  background: #fff;
  margin-top: 96px;
  font-size: 13px;
  color: var(--muted);
}
footer .wrap { max-width: var(--max-w); margin: 0 auto; }
footer a { color: var(--muted); text-decoration: underline; text-underline-offset: 2px; }
footer a:hover { color: var(--accent); }

.muted { color: var(--muted); font-size: 14px; }
.tiny  { font-size: 13px; color: var(--muted); }

code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; background: var(--code-bg); padding: 2px 5px; border-radius: 3px; }

/* Service-card hover treatment for landing page */
.card a[href^="/"] {
  font-family: var(--display-font);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  font-size: 14px;
}