/* ========================================
   AN NHIÊN HOMESTAY — Base & Reset
   ======================================== */

/* ── Modern Reset ── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-body);
  color: var(--color-brown-dark);
  background-color: var(--color-cream-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-smooth);
}

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ── Selection ── */
::selection {
  background-color: var(--color-green);
  color: var(--color-white);
}

::-moz-selection {
  background-color: var(--color-green);
  color: var(--color-white);
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-cream);
}

::-webkit-scrollbar-thumb {
  background: var(--color-brown-light);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-brown-medium);
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--fw-regular);
  line-height: var(--lh-heading);
  color: var(--color-brown-dark);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p {
  margin-bottom: var(--space-sm);
}

p:last-child {
  margin-bottom: 0;
}

/* ── Layout Utilities ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.container--wide {
  max-width: var(--container-wide);
}

/* ── Section Spacing ── */
.section {
  padding-block: var(--space-3xl);
  position: relative;
}

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

/* ── Section Headers ── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-header__label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-green);
  margin-bottom: var(--space-sm);
}

.section-header__title {
  font-size: var(--fs-h2);
  font-weight: var(--fw-regular);
  margin-bottom: var(--space-sm);
}

.section-header__divider {
  width: 60px;
  height: 1px;
  background: var(--color-brown-light);
  margin: var(--space-md) auto;
  position: relative;
}

.section-header__divider::after {
  content: '🍃';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1rem;
  line-height: 1;
}

.section-header__subtitle {
  font-size: var(--fs-body-lg);
  color: var(--color-brown-medium);
  max-width: 600px;
  margin-inline: auto;
  line-height: var(--lh-relaxed);
}

/* ── Decorative Line ── */
.deco-line {
  width: 40px;
  height: 2px;
  background: linear-gradient(to right, var(--color-green), var(--color-brown-wood));
  border: none;
}

/* ── Scroll Animations ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 100ms; }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 200ms; }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 300ms; }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 400ms; }
.reveal-stagger.revealed > *:nth-child(6) { transition-delay: 500ms; }
.reveal-stagger.revealed > *:nth-child(7) { transition-delay: 600ms; }
.reveal-stagger.revealed > *:nth-child(8) { transition-delay: 700ms; }

.reveal-stagger.revealed > * {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive breakpoints reference ──
   Mobile:  < 768px
   Tablet:  768px - 1024px
   Desktop: > 1024px
   Wide:    > 1440px
   ────────────────────────────────────── */