/* ============================================================
   Sadhana – Landing Page Styles
   Vanilla CSS · Mobile-first · No external frameworks
   Color palette mirrors the Flutter app (AppConstants)
   ============================================================ */

/* ── Custom Properties ──────────────────────────────────────── */
:root {
  /* Brand colors (mirrors AppConstants) */
  --clr-primary:    #8A5644;   /* earthy terracotta brown  */
  --clr-primary-dk: #6B4423;   /* dark brown accent        */
  --clr-secondary:  #D4A574;   /* warm gold / beige        */
  --clr-bg:         #F5F1ED;   /* very light warm beige    */
  --clr-surface:    #FFFFFF;
  --clr-text:       #2D1F1A;   /* near-black warm          */
  --clr-text-muted: #7A6055;

  /* Layout */
  --max-w:    1160px;
  --section-gap: clamp(4rem, 8vw, 7rem);

  /* Typography */
  --font-heading: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Lato', system-ui, sans-serif;

  /* Radii & shadows */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 2px 16px rgba(138, 86, 68, 0.10);
  --shadow-card-hover: 0 6px 28px rgba(138, 86, 68, 0.18);

  /* Transitions */
  --transition: 220ms ease;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  min-height: 100vh;
}

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

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

ul, ol { list-style: none; }

/* ── Typography scale ────────────────────────────────────────── */
h1, h2, h3 {
  font-family: var(--font-heading);
  line-height: 1.18;
  color: var(--clr-text);
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4rem);  font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 600; }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem);  font-weight: 600; }

p  { font-size: clamp(0.95rem, 1.5vw, 1.05rem); }

/* ── Utility: section container ─────────────────────────────── */
.section-container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .03em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color var(--transition),
              color var(--transition),
              border-color var(--transition),
              transform var(--transition),
              box-shadow var(--transition);
}

.btn:focus-visible {
  outline: 3px solid var(--clr-secondary);
  outline-offset: 3px;
}

.btn-primary {
  background-color: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
}
.btn-primary:hover {
  background-color: var(--clr-primary-dk);
  border-color: var(--clr-primary-dk);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(107, 68, 35, .3);
}

.btn-outline {
  background-color: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn-outline:hover {
  background-color: var(--clr-primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

/* ── Section header ──────────────────────────────────────────── */
.section-header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}
.section-header h2 { margin-bottom: .75rem; }
.section-header p  { color: var(--clr-text-muted); font-size: 1.05rem; }

.section-header--light h2 { color: #fff; }
.section-header--light p  { color: rgba(255,255,255,.8); }

/* ============================================================
   HEADER / NAV
============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(245, 241, 237, .92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(138, 86, 68, .12);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: .9rem clamp(1.25rem, 5vw, 2.5rem);
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-primary-dk);
}
.logo-symbol { display: inline-block; vertical-align: middle; flex-shrink: 0; }
.logo:hover  { opacity: .85; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.nav-links a {
  font-size: .9rem;
  font-weight: 700;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}
.nav-links a:not(.nav-cta):hover { color: var(--clr-primary); }

.nav-cta {
  background-color: var(--clr-primary);
  color: #fff !important;
  padding: .5rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), transform var(--transition);
}
.nav-cta:hover { background-color: var(--clr-primary-dk); transform: translateY(-1px); }

/* ── Language Switcher ───────────────────────────────────────── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: .3rem;
  flex-shrink: 0;
  color: var(--clr-primary);
}

.lang-icon {
  color: var(--clr-primary);
  flex-shrink: 0;
  pointer-events: none;
}

.lang-select {
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--clr-bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238A5644'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .5rem center;
  border: 1px solid rgba(138,86,68,.45);
  border-radius: var(--radius-sm);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  padding: .3rem 1.8rem .3rem .6rem;
  line-height: 1;
  transition: border-color var(--transition), color var(--transition),
              background-color var(--transition);
}

.lang-select option {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-weight: 600;
}

.lang-select:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}

.lang-select:focus,
.lang-select:focus-visible {
  outline: 2px solid var(--clr-secondary);
  outline-offset: 2px;
  border-color: var(--clr-primary);
}

@media (max-width: 768px) {
  .lang-select { font-size: .75rem; padding: .25rem 1.5rem .25rem .45rem; }
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .25rem;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--clr-primary-dk);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 768px) {
  .menu-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background-color: var(--clr-bg);
    border-bottom: 1px solid rgba(138, 86, 68, .15);
    padding: 1rem clamp(1.25rem, 5vw, 2.5rem) 1.5rem;
  }
  .nav-links.open { display: flex; }
  .nav-links li    { width: 100%; }
  .nav-links a     { display: block; padding: .65rem 0; }
  .nav-cta         { margin-top: .5rem; display: inline-flex; }
}

/* ============================================================
   HERO
============================================================ */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3rem;
  min-height: 88vh;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: clamp(3rem, 8vw, 6rem) clamp(1.25rem, 5vw, 2.5rem);
}

.hero-eyebrow {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: 1rem;
}

.hero-title {
  margin-bottom: 1.25rem;
  color: var(--clr-primary-dk);
}

.hero-subtitle {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--clr-text-muted);
  margin-bottom: 2rem;
  max-width: 520px;
}
.hero-subtitle strong { color: var(--clr-primary); font-weight: 700; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.hero-note {
  font-size: .8rem;
  color: var(--clr-text-muted);
  letter-spacing: .04em;
}

/* Hero visual */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 360px;
}

.hero-lotus {
  font-size: 5.5rem;
  position: relative;
  z-index: 2;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0);    }
  50%       { transform: translateY(-14px); }
}

.hero-ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid rgba(138, 86, 68, .2);
  animation: pulse-ring 3.5s ease-in-out infinite;
}
.ring-1 { width: 180px; height: 180px; animation-delay: 0s;   }
.ring-2 { width: 260px; height: 260px; animation-delay: .5s;  }
.ring-3 { width: 340px; height: 340px; animation-delay: 1s;   }

@keyframes pulse-ring {
  0%, 100% { transform: scale(1);    opacity: .4; }
  50%       { transform: scale(1.05); opacity: .2; }
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 3rem;
  }
  .hero-visual { height: 220px; }
  .hero-lotus  { font-size: 4rem; }
  .ring-1 { width: 130px; height: 130px; }
  .ring-2 { width: 190px; height: 190px; }
  .ring-3 { width: 250px; height: 250px; }
}

/* ============================================================
   ADSENSE WRAPPER
============================================================ */
.ad-wrapper {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 1.5rem clamp(1.25rem, 5vw, 2.5rem);
  min-height: 90px;
  text-align: center;
}

/* ============================================================
   STATS BAR
============================================================ */
.stats-bar {
  background-color: var(--clr-primary);
  padding: 2.5rem clamp(1.25rem, 5vw, 2.5rem);
}

.stats-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3rem;
  max-width: var(--max-w);
  margin-inline: auto;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .25rem;
  text-align: center;
  color: #fff;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1;
}

.stat-label {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  opacity: .85;
}

/* ============================================================
   FEATURES GRID
============================================================ */
.features {
  padding-block: var(--section-gap);
  background-color: var(--clr-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background-color: var(--clr-surface);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
  border: 1px solid rgba(138, 86, 68, .08);
}

.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  line-height: 1;
}

.feature-card h3 {
  margin-bottom: .6rem;
  color: var(--clr-primary-dk);
}

.feature-card p {
  color: var(--clr-text-muted);
  font-size: .95rem;
}

/* ============================================================
   ASANAS PREVIEW
============================================================ */
.asanas-preview {
  background: linear-gradient(135deg, var(--clr-primary-dk) 0%, var(--clr-primary) 100%);
  padding-block: var(--section-gap);
}

.asana-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .75rem;
  margin-bottom: 2.5rem;
}

.tag {
  background-color: rgba(255, 255, 255, .15);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .3);
  border-radius: 100px;
  padding: .4rem 1.1rem;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .04em;
  transition: background-color var(--transition);
}
.tag:hover { background-color: rgba(255, 255, 255, .25); }

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

.asanas-preview .btn-primary {
  background-color: var(--clr-secondary);
  border-color: var(--clr-secondary);
  color: var(--clr-primary-dk);
}
.asanas-preview .btn-primary:hover {
  background-color: #fff;
  border-color: #fff;
  color: var(--clr-primary-dk);
}

/* ============================================================
   HOW IT WORKS
============================================================ */
.how-it-works {
  padding-block: var(--section-gap);
  background-color: var(--clr-surface);
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 2rem;
  counter-reset: step;
}

.step {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.75rem;
  background-color: var(--clr-bg);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--clr-secondary);
}

.step-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--clr-secondary);
  line-height: 1;
}

.step-content h3 {
  margin-bottom: .4rem;
  color: var(--clr-primary-dk);
}

.step-content p { color: var(--clr-text-muted); font-size: .95rem; }

/* ============================================================
   FINAL CTA
============================================================ */
.final-cta {
  text-align: center;
  padding-block: var(--section-gap);
  background: linear-gradient(180deg, var(--clr-bg) 0%, var(--clr-surface) 100%);
}

.final-cta h2 { margin-bottom: .75rem; }
.final-cta p  { color: var(--clr-text-muted); margin-bottom: 2rem; }

/* ============================================================
   FOOTER
============================================================ */
.site-footer {
  background-color: var(--clr-primary-dk);
  color: rgba(255,255,255,.85);
  padding-block: 3rem;
}

.footer-container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
}

.footer-tagline {
  font-size: .9rem;
  opacity: .75;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
}

.footer-links a {
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: rgba(255,255,255,.75);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--clr-secondary); }

.footer-legal {
  font-size: .8rem;
  opacity: .5;
  margin-top: .5rem;
}

/* ============================================================
   FOCUS & ACCESSIBILITY
============================================================ */
:focus-visible {
  outline: 3px solid var(--clr-secondary);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ============================================================
   PRINT
============================================================ */
@media print {
  .site-header, .ad-wrapper, .hero-visual, .menu-toggle { display: none; }
  body { font-size: 12pt; }
}