/* ============================================================
   THINK LAYER — Global Design System & Variables (Warm Editorial Theme)
   ============================================================ */

:root {
  /* Warm Design System Tokens */
  --bg: #FFFCF8;
  --bg-2: #F5EFE6;
  --ink: #111111;
  --ink-muted: #7A7067;
  --border: #E8E0D5;
  --accent: #C2622D;
  --accent-bg: #FEF3EC;
  --white: #FFFFFF;

  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Lora', Georgia, serif;

  /* Backward Compatibility Mappings */
  --color-dark: var(--ink);
  --color-light: var(--bg);
  --color-cream: var(--bg-2);
  --color-card: var(--white);
  --color-accent: var(--accent);
  --color-accent-hover: #D8723B;
  --color-accent-soft: var(--accent-bg);
  --color-accent-ring: rgba(194, 98, 45, 0.1);
  --color-accent-dark-text: var(--accent);

  --text-primary: var(--ink);
  --text-secondary: var(--ink-muted);
  --text-muted: var(--ink-muted);

  --border-light: var(--border);
  --border-dark: var(--border);

  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 6px 24px rgba(0, 0, 0, 0.08);

  --font-heading: var(--font-serif);

  --container-max: 1080px;
  --navbar-max: 1080px;
  --section-padding: 110px;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ----------------------------------------------------------
   1. Reset & Base (Light theme enforcement)
   ---------------------------------------------------------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--color-light);
  color: var(--text-primary);
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.8;
  color: var(--text-primary);
  background-color: var(--color-light);
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s var(--ease-out-expo);
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  outline: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

/* Headings font rules matching design system */
h1, h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-primary);
}

h3, h4, h5, h6 {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--text-primary);
}

/* ----------------------------------------------------------
   2. Navbar (Sticky warm layout)
   ---------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 24px;
  height: 80px;
  display: flex;
  align-items: center;
  background-color: transparent;
  transition: all 0.3s var(--ease-out-expo);
  border-bottom: 1px solid transparent;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--navbar-max);
  margin: 0 auto;
  width: 100%;
}

.navbar-logo {
  font-family: var(--font-body);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.navbar.scrolled {
  background-color: var(--color-card);
  border-bottom-color: var(--border-light);
  box-shadow: 0 1px 0 var(--border-light);
  height: 72px;
  padding: 12px 24px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.glass-pill {
  display: flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  padding: 0;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.3s var(--ease-out-expo);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-book,
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  height: 40px;
  padding: 0 18px;
  border-radius: 8px;
  transition: all 0.3s var(--ease-out-expo);
  white-space: nowrap;
}

.nav-book {
  background-color: var(--color-dark); /* Ink black button */
  color: #ffffff;
  border: 1px solid transparent;
}

.nav-book:hover {
  background-color: var(--color-accent);
  transform: translateY(-1px);
}

.nav-cta {
  background: transparent;
  border: 1px solid var(--color-dark);
  color: var(--color-dark);
}

.nav-cta:hover {
  background-color: var(--color-dark);
  color: #ffffff;
  transform: translateY(-1px);
}

/* ----------------------------------------------------------
   3. Sections, Spacing & Container
   ---------------------------------------------------------- */
.section {
  padding: var(--section-padding) 0;
}

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

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

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

.section-label {
  display: block;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.section-headline {
  font-family: var(--font-heading);
  font-size: 44px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-headline .faint {
  color: var(--text-muted);
}

.section-sub {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 560px;
}

.text-center {
  text-align: center;
}

.text-center .section-sub {
  margin-left: auto;
  margin-right: auto;
}

/* ----------------------------------------------------------
   4. Footer (Dark background ink footer)
   ---------------------------------------------------------- */
.footer {
  background-color: var(--color-dark);
  padding: 80px 0 40px;
  color: #ffffff;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 60px;
  flex-wrap: wrap;
  gap: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo {
  font-family: var(--font-body);
  font-size: 20px;
  font-weight: 600;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.footer-tagline {
  font-size: 14px;
  color: #ffffff;
  opacity: 0.6;
  max-width: 300px;
  line-height: 1.6;
}

.footer-grid {
  display: flex;
  gap: 60px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  color: #ffffff;
  opacity: 0.9;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  margin-bottom: 8px;
  display: block;
}

.footer-col a {
  font-size: 14px;
  color: #ffffff;
  opacity: 0.6;
}

.footer-col a:hover {
  opacity: 1;
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 40px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

/* Animations */
.anim-fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.anim-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}