/* ==========================================================================
   BRAWNVR - Premium Yoga Studio Styles
   ========================================================================== */

:root {
  /* Colors */
  --bg-primary: #f8f6f2;
  --bg-secondary: #eeeae0;
  --bg-dark: #1a1a1a;
  --text-primary: #222222;
  --text-secondary: #555555;
  --text-light: #f8f6f2;
  --accent: #8b7d6b;
  
  /* Typography */
  --font-sans: 'Helvetica Neue', Arial, sans-serif;
  --font-serif: 'Playfair Display', 'Georgia', serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  
  /* Transitions */
  --transition-fast: 0.3s ease;
  --transition-slow: 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-breath: 3s ease-in-out infinite alternate;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
  opacity: 0; /* For VE-8: Page transition */
  transition: opacity var(--transition-slow);
}

body.loaded {
  opacity: 1;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ==========================================================================
   Typography Utilities
   ========================================================================== */
.text-serif { font-family: var(--font-serif); }
.text-sans { font-family: var(--font-sans); }
.text-center { text-align: center; }

h1.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: clamp(2rem, 5vw, 4rem);
  margin-bottom: var(--space-lg);
}

.subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
}

/* ==========================================================================
   Layout & Grid Strategies
   ========================================================================== */
/* Grid 1: Classic 12-Column */
.grid-classic {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}
.grid-classic > .col-6 { grid-column: span 6; }
.grid-classic > .col-4 { grid-column: span 4; }
.grid-classic > .col-12 { grid-column: span 12; }

/* Grid 2: Asymmetric Split */
.grid-asymmetric {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-lg);
  align-items: center;
}
.grid-asymmetric.reverse {
  grid-template-columns: 2fr 1fr;
}

/* Grid 3: Masonry-style Auto-fit */
.grid-masonry {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}
.grid-masonry .masonry-tall {
  grid-row: span 2;
}

/* ==========================================================================
   Components
   ========================================================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: var(--space-md) 0;
  z-index: 100;
  mix-blend-mode: difference;
  color: var(--text-light);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo svg {
  height: 32px;
  width: auto;
}

.nav-desktop {
  display: flex;
  gap: var(--space-md);
}

.nav-desktop a {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: 50px;
  background-color: var(--bg-dark);
  color: var(--text-light);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

/* Hero Section */
.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%; /* For parallax */
  object-fit: cover;
  z-index: -1;
  filter: brightness(0.8);
}

.hero-content {
  color: var(--text-light);
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}

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

.section-dark .subtitle {
  color: #aaaaaa;
}

/* ==========================================================================
   Visual Effects (VE) Classes
   ========================================================================== */

/* VE-1: Breath-timed section reveal */
.reveal-section {
  opacity: 0;
  transform: translateY(40px) scale(0.98);
  transition: opacity 1s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal-section.is-revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
  animation: breathe-scale var(--transition-breath);
}
@keyframes breathe-scale {
  from { transform: scale(1); }
  to { transform: scale(1.01); }
}

/* VE-2: Soft directional hover field */
.hover-field-card {
  position: relative;
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: var(--space-md);
  overflow: hidden;
}
.hover-field-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), rgba(139, 125, 107, 0.15) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.hover-field-card:hover::before {
  opacity: 1;
}

/* VE-4: SVG mandala path morph */
.mandala-icon {
  width: 100px;
  height: 100px;
  transition: transform 10s linear;
}
.mandala-icon:hover {
  transform: rotate(360deg);
}

/* VE-5: Magnetic pill buttons handled in JS, base style here */
.magnetic-btn {
  /* JS translates this element based on mouse */
  transition: transform 0.1s linear;
}

/* VE-6: Kinetic serif/sans type swap */
.kinetic-type {
  font-family: var(--font-sans);
  transition: font-family 0.5s ease;
}
.kinetic-type.is-revealed {
  font-family: var(--font-serif);
}

/* VE-7: Narrative focus transition */
.focus-container {
  display: flex;
  gap: var(--space-md);
}
.focus-item {
  transition: opacity var(--transition-fast), filter var(--transition-fast);
}
.focus-container:hover .focus-item:not(:hover) {
  opacity: 0.3;
  filter: blur(2px);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .grid-classic > .col-6 { grid-column: span 12; }
  .grid-classic > .col-4 { grid-column: span 6; }
  .grid-asymmetric, .grid-asymmetric.reverse { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .grid-classic > .col-4 { grid-column: span 12; }
  .section { padding: var(--space-lg) 0; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-sm); }
  h1.hero-title { font-size: 2.5rem; }
  .section-title { font-size: 1.8rem; }
}

/* ==========================================================================
   Prefers Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal-section {
    opacity: 1;
    transform: none;
  }
  .hero-bg {
    transform: none !important;
  }
  .magnetic-btn {
    transform: none !important;
  }
  .hover-field-card::before {
    display: none;
  }
  .mandala-icon:hover {
    transform: none;
  }
  body {
    opacity: 1;
  }
}