/* ==========================================================
   Dr. Denise Koh — Speaker landing page
   Palette: deep navy (authority), gold (warmth / spotlight),
   red (calls to action). Edit the tokens in :root to re-theme.
   ========================================================== */

:root {
  --navy: #0a2a5e;
  --navy-dark: #071c40;
  --navy-soft: #16397a;
  --gold: #f2b705;
  --gold-soft: #fdf3d2;
  --red: #c8102e;
  --red-dark: #a30d26;
  --cream: #fbf9f3;
  --white: #ffffff;
  --ink: #14213a;
  --ink-soft: #4b5872;
  --border: #e4e1d8;
  --radius: 16px;
  --shadow: 0 2px 4px rgba(10, 42, 94, 0.05), 0 12px 32px rgba(10, 42, 94, 0.10);
  --font-head: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  font-size: 17px;
}

img { max-width: 100%; display: block; }
a { color: var(--navy); }

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

h1, h2, h3 {
  font-family: var(--font-head);
  line-height: 1.18;
  letter-spacing: -0.01em;
  font-weight: 600;
}

h1 { font-size: clamp(2.3rem, 5.2vw, 3.7rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.3rem); }
h3 { font-size: 1.25rem; }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 14px;
}

.lead { font-size: 1.15rem; color: var(--ink-soft); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s, color 0.15s, border-color 0.15s;
}

.btn:hover { transform: translateY(-1px); }

.btn-red { background: var(--red); color: var(--white); }
.btn-red:hover { background: var(--red-dark); box-shadow: var(--shadow); }

.btn-gold { background: var(--gold); color: var(--navy-dark); }
.btn-gold:hover { box-shadow: var(--shadow); }

.btn-outline-light { border-color: rgba(255, 255, 255, 0.55); color: var(--white); }
.btn-outline-light:hover { background: var(--white); color: var(--navy); border-color: var(--white); }

.btn-outline { border-color: var(--navy); color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: var(--white); }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--navy-dark);
  border-bottom: 3px solid var(--gold);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--white);
}

.logo span { color: var(--gold); }

.nav { display: flex; align-items: center; gap: 2px; }

.nav a {
  text-decoration: none;
  color: #c9d3ea;
  font-weight: 500;
  font-size: 0.93rem;
  padding: 8px 14px;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s;
}

.nav a:hover { background: rgba(255, 255, 255, 0.1); color: var(--white); }
.nav a.nav-cta { background: var(--red); color: var(--white); margin-left: 8px; }
.nav a.nav-cta:hover { background: var(--red-dark); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 0.95rem;
  color: var(--white);
  cursor: pointer;
  font-family: inherit;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 80% 30%, var(--navy-soft), var(--navy) 55%, var(--navy-dark));
  color: var(--white);
  padding: 80px 0 88px;
}

/* Subtle sunburst: a spotlight on stage, and a quiet nod to the sun
   rays of the Philippine flag. Remove this block for a plainer hero. */
.hero::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 90%;
  aspect-ratio: 1;
  background: repeating-conic-gradient(
    from 0deg,
    rgba(242, 183, 5, 0.10) 0deg 7.5deg,
    transparent 7.5deg 15deg
  );
  border-radius: 50%;
  pointer-events: none;
}

.hero .container { position: relative; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  align-items: center;
}

.hero .eyebrow { color: var(--gold); }
.hero h1 { margin-bottom: 20px; }
.hero h1 em { font-style: italic; color: var(--gold); }
.hero .lead { color: #d3dcf0; max-width: 560px; }

.hero-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }

.chip {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
}

.photo {
  aspect-ratio: 4 / 5;
  border-radius: 28px;
  background: linear-gradient(145deg, #1d4a96, var(--navy-soft));
  border: 3px solid var(--gold);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 24px;
  color: #d3dcf0;
  font-size: 0.95rem;
}

.photo img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Proof strip ---------- */

.proof {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}

.proof p {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.proof-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 32px;
  font-family: var(--font-head);
  font-size: 1.05rem;
  color: var(--navy);
  font-weight: 600;
}

/* ---------- Sections ---------- */

section { padding: 84px 0; }
.bg-white { background: var(--white); }
.bg-navy { background: var(--navy); color: var(--white); }
.bg-gold-soft { background: var(--gold-soft); }

.section-head { max-width: 660px; margin-bottom: 46px; }
.section-head p { margin-top: 12px; color: var(--ink-soft); }
.bg-navy .section-head p { color: #d3dcf0; }
.bg-navy .eyebrow { color: var(--gold); }

/* ---------- Video ---------- */

.video-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  align-items: start;
}

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--navy-dark);
  box-shadow: var(--shadow);
}

.video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.video-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  color: #d3dcf0;
  padding: 20px;
  font-size: 0.95rem;
}

.video-placeholder strong { display: block; color: var(--gold); font-size: 1.05rem; margin-bottom: 4px; }

.video-caption { margin-top: 12px; font-size: 0.92rem; color: var(--ink-soft); }
.video-caption strong { color: var(--ink); display: block; }

.video-stack { display: grid; gap: 24px; }

/* ---------- Keynote cards ---------- */

.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 4px solid var(--gold);
  border-radius: var(--radius);
  padding: 32px 30px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.card .tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 10px;
}

.card h3 { margin-bottom: 10px; font-size: 1.4rem; }
.card p { color: var(--ink-soft); font-size: 0.98rem; }

.card ul { list-style: none; margin-top: 16px; display: grid; gap: 8px; }

.card li { padding-left: 26px; position: relative; font-size: 0.95rem; }

.card li::before {
  content: "★";
  position: absolute;
  left: 0;
  color: var(--gold);
}

.card-custom { background: var(--navy); color: var(--white); border-top-color: var(--red); }
.card-custom p, .card-custom li { color: #d3dcf0; }
.card-custom .tag { color: var(--gold); }

/* ---------- Clean-comedy callout ---------- */

.callout {
  background: var(--gold-soft);
  border-left: 5px solid var(--gold);
  border-radius: 12px;
  padding: 22px 26px;
  margin-top: 40px;
  font-size: 1.02rem;
}

.callout strong { font-family: var(--font-head); font-size: 1.15rem; }

/* ---------- Process steps ---------- */

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }

.step {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: 28px 22px;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--gold);
  color: var(--navy-dark);
  font-weight: 700;
  margin-bottom: 16px;
}

.step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { font-size: 0.93rem; color: #d3dcf0; }

/* ---------- Why / formats ---------- */

.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.why {
  padding: 28px;
  border-radius: var(--radius);
  background: var(--cream);
  border: 1px solid var(--border);
}

.why h3 { margin-bottom: 8px; }
.why p { color: var(--ink-soft); font-size: 0.97rem; }

.formats { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }

.format {
  padding: 8px 18px;
  border-radius: 999px;
  border: 2px solid var(--navy);
  color: var(--navy);
  font-weight: 600;
  font-size: 0.9rem;
}

/* ---------- Testimonials ---------- */

.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.quote {
  background: var(--white);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px;
  font-size: 0.98rem;
  color: var(--ink-soft);
}

.quote .who { margin-top: 16px; font-weight: 600; font-size: 0.88rem; color: var(--ink); }

/* ---------- About ---------- */

.about-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 56px; align-items: center; }

.about-grid .photo { border-color: var(--navy); background: linear-gradient(145deg, #dbe4f5, #c3d1ee); color: var(--navy); }

.credentials { margin-top: 16px; font-size: 0.88rem; letter-spacing: 0.04em; color: var(--ink-soft); }

.award-list { list-style: none; margin-top: 22px; display: grid; gap: 8px; font-size: 0.95rem; }

.award-list li { padding-left: 26px; position: relative; }
.award-list li::before { content: "★"; position: absolute; left: 0; color: var(--gold); }

/* ---------- Booking ---------- */

.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: start; }

.contact-grid .lead { color: #d3dcf0; }
.contact-grid a { color: var(--gold); }

form { display: grid; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

label { font-weight: 600; font-size: 0.88rem; display: grid; gap: 6px; color: var(--white); }

input, select, textarea {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid transparent;
  border-radius: 12px;
  background: var(--white);
  color: var(--ink);
}

input:focus, select:focus, textarea:focus { outline: 3px solid var(--gold); outline-offset: 1px; }
textarea { min-height: 120px; resize: vertical; }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--navy-dark);
  color: #a9b5d0;
  padding: 40px 0 28px;
  font-size: 0.85rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.site-footer a { color: #c9d3ea; text-decoration: none; margin-right: 18px; }
.site-footer a:hover { color: var(--gold); }

.footer-note { border-top: 1px solid rgba(255, 255, 255, 0.12); padding-top: 20px; line-height: 1.6; }

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  body { font-size: 16px; }
  section { padding: 60px 0; }
  .hero { padding: 52px 0 60px; }

  .hero-grid, .about-grid, .contact-grid, .video-grid { grid-template-columns: 1fr; gap: 36px; }
  .photo { max-width: 340px; }
  .cards, .three, .quotes { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .nav-toggle { display: block; }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--navy-dark);
    padding: 12px 24px 20px;
    border-bottom: 3px solid var(--gold);
  }

  .nav.open { display: flex; }
  .nav a { padding: 12px 14px; }
  .nav a.nav-cta { margin: 8px 0 0; text-align: center; }
}

@media (max-width: 520px) {
  .steps { grid-template-columns: 1fr; }
}