/* ============================================
   MK Travel — Antarctic Travel Agent
   Base styles
   ============================================ */

:root {
  --color-navy: #0b2338;
  --color-navy-light: #163a56;
  --color-ice: #eaf3f8;
  --color-ice-2: #d7e9f2;
  --color-white: #ffffff;
  --color-accent: #3f8cae;
  --color-accent-dark: #2c6e8c;
  --color-text: #1c2b36;
  --color-text-muted: #55697a;
  --font-serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-width: 1140px;
  --radius: 10px;
  --shadow: 0 8px 30px rgba(11, 35, 56, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-accent-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--color-navy);
  line-height: 1.2;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.3rem; }

p { margin: 0 0 1em; color: var(--color-text-muted); }

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

.section {
  padding: 80px 0;
}

.section--alt {
  background: var(--color-ice);
}

.section-header {
  max-width: 680px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-header p {
  margin-bottom: 0;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  font-weight: 600;
  margin-bottom: 12px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  box-shadow: 0 6px 18px rgba(63, 140, 174, 0.35);
}

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

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn--outline-dark {
  background: transparent;
  border-color: var(--color-accent-dark);
  color: var(--color-accent-dark);
}

.btn--outline-dark:hover {
  background: var(--color-accent-dark);
  color: var(--color-white);
}

.btn-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Header / nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-ice-2);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-navy);
}

.nav__logo span {
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__links a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav__links a.is-active,
.nav__links a:hover {
  color: var(--color-accent-dark);
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--color-navy);
}

@media (max-width: 860px) {
  .nav__toggle {
    display: block;
  }

  .nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    border-bottom: 1px solid var(--color-ice-2);
    display: none;
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__links li {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-ice-2);
  }

  .nav__links li:last-child {
    border-bottom: none;
    padding-top: 16px;
  }
}

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  color: var(--color-white);
  padding: 110px 0 100px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero h1,
.hero .eyebrow {
  color: var(--color-white);
}

.hero p.lead {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.15rem;
  max-width: 520px;
}

.hero__image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 5;
  background: var(--color-ice-2) center / cover no-repeat;
}

@media (max-width: 860px) {
  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero__image {
    order: -1;
    aspect-ratio: 16 / 9;
  }
}

/* Page hero (interior pages) */
.page-hero {
  background: var(--color-navy);
  color: var(--color-white);
  padding: 72px 0;
  text-align: center;
}

.page-hero h1,
.page-hero .eyebrow {
  color: var(--color-white);
}

.page-hero p {
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
  margin: 0 auto;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

@media (max-width: 900px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-ice-2);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.card h3 {
  margin-bottom: 10px;
}

.card .card__meta {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  font-weight: 600;
  margin-bottom: 10px;
}

.card .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* Two-column content block */
.split {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: center;
}

@media (max-width: 860px) {
  .split {
    grid-template-columns: 1fr;
  }
}

.split__image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 3 / 4;
  background: var(--color-ice-2) center / cover no-repeat;
}

.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.checklist li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 14px;
  color: var(--color-text-muted);
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* CTA band */
.cta-band {
  background: var(--color-accent);
  color: var(--color-white);
  padding: 56px 0;
  text-align: center;
}

.cta-band h2 {
  color: var(--color-white);
}

.cta-band p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 560px;
  margin: 0 auto 28px;
}

.cta-band .btn-row {
  justify-content: center;
}

/* Consultation / Calendly embed section */
.consult-embed {
  background: var(--color-white);
  border: 1px solid var(--color-ice-2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  min-height: 620px;
}

/* Webinar list */
.webinar-item {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-ice-2);
}

@media (max-width: 700px) {
  .webinar-item {
    grid-template-columns: 1fr;
    text-align: left;
  }
}

.webinar-item__date {
  font-family: var(--font-serif);
  color: var(--color-navy);
  text-align: center;
  background: var(--color-ice);
  border-radius: var(--radius);
  padding: 14px 8px;
}

.webinar-item__date .month {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-dark);
}

.webinar-item__date .day {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
}

.webinar-item h3 {
  margin-bottom: 6px;
}

.webinar-item .partner {
  font-size: 0.85rem;
  color: var(--color-accent-dark);
  font-weight: 600;
  margin-bottom: 6px;
}

/* Footer */
.site-footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

@media (max-width: 700px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.site-footer h4 {
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.75);
}

.site-footer a:hover {
  color: var(--color-white);
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li {
  margin-bottom: 10px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 24px;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* About page bio */
.bio-credentials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

@media (max-width: 700px) {
  .bio-credentials {
    grid-template-columns: 1fr;
  }
}

.bio-credentials .stat {
  text-align: center;
  background: var(--color-ice);
  border-radius: var(--radius);
  padding: 24px 12px;
}

.bio-credentials .stat strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-navy);
}

.bio-credentials .stat span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Newsletter / lead magnet inline box (fallback if popup is dismissed) */
.lead-box {
  background: var(--color-ice);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
}

.lead-box h2 {
  margin-bottom: 8px;
}

/* TODO placeholder note styling (remove once real content/embeds are in) */
.todo-note {
  display: block;
  margin: 14px 0;
  padding: 12px 16px;
  background: #fff8e1;
  border: 1px dashed #d8b34a;
  border-radius: 6px;
  font-size: 0.85rem;
  color: #6b5410;
}