/* ==========================================================================
   QUỐC PHONG HAIR SALON & HEAD SPA — CƠ SỞ 02
   BASE & RESET STYLES
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  max-width: 100vw;
  width: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-warm-ivory);
  background-color: var(--color-obsidian);
  overflow-x: clip;
  max-width: 100vw;
  width: 100%;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.menu-open {
  overflow: hidden !important;
  touch-action: none;
}

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

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
  color: var(--color-warm-ivory);
  text-wrap: balance;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 600; }
h2 { font-size: clamp(1.85rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.35rem, 2.2vw, 1.85rem); }
h4 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }
h5 { font-size: 1.15rem; }
h6 { font-size: 1rem; }

p {
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted-dark);
}

strong, b {
  font-weight: 600;
  color: var(--color-warm-ivory);
}

.text-nowrap {
  white-space: nowrap;
}

.text-balance {
  text-wrap: balance;
}

/* ==========================================================================
   LAYOUT CONTAINERS & SECTION WRAPPERS
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
  position: relative;
}

@media (max-width: 768px) {
  .section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }
}

/* Section Themes */
.section-dark {
  background-color: var(--color-obsidian);
  color: var(--color-warm-ivory);
}

.section-botanical {
  background-color: var(--color-botanical-dark);
  color: var(--color-warm-ivory);
}

.section-moss {
  background-color: var(--color-moss);
  color: var(--color-warm-ivory);
}

.section-ivory {
  background-color: var(--color-warm-ivory);
  color: var(--color-obsidian);
}

.section-ivory h1, 
.section-ivory h2, 
.section-ivory h3, 
.section-ivory h4,
.section-ivory strong {
  color: var(--color-obsidian);
}

.section-ivory p {
  color: var(--color-text-muted-light);
}

/* Section Header (Centered or Left-aligned) */
.section-header {
  margin-bottom: var(--space-12);
}

.section-header.text-center {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.section-header .eyebrow {
  margin-bottom: var(--space-3);
}

.section-header .section-desc {
  margin-top: var(--space-4);
  font-size: var(--text-md);
}

/* ==========================================================================
   COMMON TYPOGRAPHY ACCENTS & UTILITIES
   ========================================================================== */

.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-champagne);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 1px;
  background-color: var(--color-champagne);
}

.text-champagne { color: var(--color-champagne) !important; }
.text-ivory { color: var(--color-warm-ivory) !important; }
.text-obsidian { color: var(--color-obsidian) !important; }
.text-muted { color: var(--color-text-muted-dark) !important; }
.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }

/* Spacing Utilities */
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-10 { margin-bottom: var(--space-10); }

/* Flex & Grid Helpers */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Luxury Divider */
.divider-gold {
  height: 1px;
  width: 100%;
  background: linear-gradient(90deg, transparent 0%, var(--color-champagne) 50%, transparent 100%);
  opacity: 0.4;
  margin: var(--space-8) 0;
}

/* Subtle Card Glow */
.gold-border {
  border: 1px solid var(--color-card-border);
}