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

:root {
  --cream:    #FAF7F2;
  --white:    #FFFFFF;
  --red:      #B5342A;
  --red-lt:   #ECC8C6;
  --grey:     #8A8A8A;
  --grey-lt:  #D9D4CF;
  --charcoal: #3A3A3A;
  --mid:      #6B6B6B;
  --light:    #B0B0B0;
  --border:   #E5E0D8;
  --radius:   12px;
  --shadow:   0 4px 20px rgba(0,0,0,0.07);
  --shadow-lg:0 8px 40px rgba(0,0,0,0.10);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Lato', 'Segoe UI', sans-serif;
  background: var(--cream);
  color: var(--charcoal);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--red); text-decoration: none; }
a:hover { color: var(--charcoal); }

img { max-width: 100%; }

/* ===== Typography ===== */
h1, h2, h3, h4 {
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 700;
  line-height: 1.25;
  color: var(--charcoal);
}

.subtitle {
  font-size: 1rem;
  color: var(--mid);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
}

/* ===== Navigation ===== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,247,242,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 0 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--charcoal);
  text-decoration: none;
}

.nav-logo-img { height: 52px; width: auto; flex-shrink: 0; }
.nav-logo span { color: var(--red); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--mid);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active { color: var(--charcoal); }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--red);
  color: var(--white);
}
.btn-primary:hover { background: #8f1f1a; color: var(--white); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(181,52,42,0.35); }

.btn-outline {
  background: transparent;
  color: var(--charcoal);
  border: 2px solid var(--charcoal);
}
.btn-outline:hover { background: var(--charcoal); color: var(--white); }

.btn-sage {
  background: var(--grey);
  color: var(--white);
}
.btn-sage:hover { background: #5a5a5a; color: var(--white); transform: translateY(-1px); }

.btn-sm { padding: 0.5rem 1.25rem; font-size: 0.8rem; }

/* ===== Section Layouts ===== */
section { padding: 80px 5%; }
.section-header { text-align: center; margin-bottom: 50px; }
.section-header h2 { font-size: 2.4rem; margin-bottom: 0.5rem; }
.section-header p { color: var(--mid); max-width: 500px; margin: 0 auto; }

/* ===== Hero ===== */
.hero {
  min-height: calc(100vh - 70px);
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 80px 5%;
  background: linear-gradient(135deg, #FAF7F2 0%, #F2EAE4 50%, #EDE4E2 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(181,52,42,0.10) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px; left: -80px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(138,138,138,0.10) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content { max-width: 580px; position: relative; z-index: 1; }
.hero-content .subtitle { color: var(--red); margin-bottom: 1rem; }
.hero-content h1 { font-size: clamp(2rem, 4vw, 3.2rem); margin-bottom: 1.2rem; }
.hero-content p { font-size: 1.1rem; color: var(--mid); margin-bottom: 2rem; max-width: 440px; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-visual {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 420px;
  height: 420px;
  border-radius: 60% 40% 70% 30% / 40% 60% 30% 70%;
  background: linear-gradient(135deg, var(--grey-lt) 0%, var(--red-lt) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
  animation: morph 8s ease-in-out infinite;
  z-index: 0;
}

@keyframes morph {
  0%, 100% { border-radius: 60% 40% 70% 30% / 40% 60% 30% 70%; }
  25% { border-radius: 30% 70% 40% 60% / 60% 30% 70% 40%; }
  50% { border-radius: 50% 50% 30% 70% / 70% 30% 50% 50%; }
  75% { border-radius: 70% 30% 60% 40% / 30% 70% 40% 60%; }
}

/* ===== Services ===== */
.services { background: var(--white); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--cream);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--red-lt);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.service-card h3 { font-size: 1.3rem; margin-bottom: 0.6rem; }
.service-card p { color: var(--mid); font-size: 0.95rem; margin-bottom: 1.2rem; }

.service-meta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  background: var(--grey-lt);
  color: #4a4a4a;
}

.tag.gold { background: var(--red-lt); color: #7a1a14; }

/* ===== About Strip ===== */
.about-strip {
  background: linear-gradient(135deg, #3A3A3A 0%, #525252 100%);
  color: var(--white);
  padding: 60px 5%;
  text-align: center;
}

.about-strip h2 { color: var(--white); font-size: 2rem; margin-bottom: 1rem; }
.about-strip p { color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto 2rem; font-size: 1.05rem; }

.stats {
  display: flex;
  justify-content: center;
  gap: 4rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.stat { text-align: center; }
.stat-number { font-family: 'Playfair Display', Georgia, serif; font-size: 2.5rem; font-weight: 700; color: var(--white); }
.stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.75); letter-spacing: 0.08em; text-transform: uppercase; }

/* ===== Calendar Page ===== */
.page-hero {
  background: linear-gradient(135deg, #FAF7F2 0%, #F2EAE4 100%);
  padding: 60px 5% 40px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 { font-size: 2.5rem; margin-bottom: 0.5rem; }
.page-hero p { color: var(--mid); max-width: 500px; margin: 0 auto; }

.schedule-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 2rem;
  padding: 40px 5%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Calendar */
.calendar-wrap {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.calendar-header {
  background: var(--charcoal);
  color: var(--white);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.calendar-header h3 { font-size: 1.15rem; color: var(--white); }

.cal-nav {
  background: none;
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--white);
  width: 32px; height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
}
.cal-nav:hover { background: rgba(255,255,255,0.15); }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
}

.cal-day-name {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--light);
  text-align: center;
  padding: 0.75rem 0;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--cream);
}

.cal-day {
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  min-height: 72px;
  padding: 0.5rem;
  cursor: default;
  position: relative;
  transition: background 0.15s;
}

.cal-day.other-month { background: var(--cream); }
.cal-day.today .day-num { background: var(--red); color: var(--white); border-radius: 50%; }
.cal-day.has-class { cursor: pointer; }
.cal-day.has-class:hover { background: #f5eded; }
.cal-day.selected { background: #f0e8e7; }

.day-num {
  font-size: 0.85rem;
  font-weight: 700;
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 4px;
}

.day-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
}

.day-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--red);
}

.day-dot.full { background: var(--light); }

/* Class List Panel */
.class-panel {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  height: fit-content;
  position: sticky;
  top: 90px;
}

.class-panel-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.class-panel-header h3 { font-size: 1rem; }
.class-panel-header p { color: var(--mid); font-size: 0.85rem; }

.class-list { padding: 1rem; }

.class-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 0.75rem;
  transition: all 0.2s;
  cursor: pointer;
}

.class-item:hover { border-color: var(--red-lt); background: #fdf7f6; }
.class-item.full { opacity: 0.6; cursor: default; }
.class-item.full:hover { border-color: var(--border); background: var(--white); }

.class-item-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.4rem;
}

.class-item-title { font-weight: 700; font-size: 0.95rem; }
.availability {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  white-space: nowrap;
}

.availability.open { background: #ebebeb; color: #3a3a3a; }
.availability.few { background: #f5e8e7; color: #7a1a14; }
.availability.full-badge { background: #e0e0e0; color: #5a5a5a; }

.class-item-meta { font-size: 0.82rem; color: var(--mid); }
.class-item-meta span { margin-right: 0.75rem; }

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--light);
}

.empty-state p { font-size: 0.9rem; margin-top: 0.5rem; }

/* ===== Registration Form ===== */
.register-layout {
  max-width: 680px;
  margin: 0 auto;
  padding: 40px 5%;
}

.form-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 2.5rem;
}

.form-card h2 { font-size: 1.7rem; margin-bottom: 0.3rem; }
.form-card .subtitle { margin-bottom: 2rem; }

.selected-class-banner {
  background: var(--grey-lt);
  border: 1px solid var(--grey);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.scb-icon { font-size: 1.5rem; }
.scb-info h4 { font-size: 0.95rem; margin-bottom: 0.1rem; }
.scb-info p { font-size: 0.82rem; color: var(--mid); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mid);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  background: var(--cream);
  color: var(--charcoal);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(181,52,42,0.12);
  background: var(--white);
}

.form-group select option[value=""] { color: var(--light); }

.form-submit { width: 100%; margin-top: 0.5rem; }

.success-card {
  text-align: center;
  padding: 3rem 2rem;
}

.success-icon { font-size: 4rem; margin-bottom: 1rem; display: block; }
.success-card h3 { font-size: 1.6rem; margin-bottom: 0.5rem; }
.success-card p { color: var(--mid); margin-bottom: 2rem; }

/* ===== Admin Page ===== */
.admin-layout {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 5%;
}

.admin-login {
  max-width: 420px;
  margin: 100px auto;
  padding: 0 5%;
}

.admin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.admin-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.admin-card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.admin-card-header h3 { font-size: 1.1rem; }
.admin-card-body { padding: 1.5rem; }

.admin-class-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.6rem;
  font-size: 0.9rem;
}

.admin-class-info h4 { font-size: 0.9rem; margin-bottom: 0.15rem; }
.admin-class-info p { font-size: 0.8rem; color: var(--mid); }

.btn-danger {
  background: #f5e4e4;
  color: #9b3a3a;
  border: none;
  padding: 0.35rem 0.8rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-danger:hover { background: #e8c4c4; }

.badge-count {
  background: var(--grey-lt);
  color: #3a3a3a;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 50px;
  margin-left: 0.5rem;
}

.alert {
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.alert-success { background: #ebebeb; color: #3a3a3a; border: 1px solid #c8c4c0; }
.alert-error { background: #f5e4e4; color: #9b3a3a; border: 1px solid #e8b4b4; }

/* ===== Footer ===== */
footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.7);
  padding: 50px 5% 30px;
  text-align: center;
}

footer .nav-logo {
  display: inline-flex;
  justify-content: center;
  margin-bottom: 0.5rem;
  color: var(--white);
  font-size: 1.5rem;
}

footer .nav-logo-img { background: var(--white); border-radius: 8px; padding: 4px 6px; }
footer p { font-size: 0.9rem; max-width: 400px; margin: 0 auto 2rem; }
footer .footer-links { display: flex; justify-content: center; gap: 2rem; margin-bottom: 2rem; flex-wrap: wrap; }
footer .footer-links a { color: rgba(255,255,255,0.6); font-size: 0.85rem; }
footer .footer-links a:hover { color: var(--white); }
footer .copyright { font-size: 0.8rem; color: rgba(255,255,255,0.4); border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1.5rem; }

/* ===== Hamburger Toggle ===== */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 101;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--charcoal);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Responsive ===== */

/* Tablet */
@media (max-width: 900px) {
  .hero-visual { display: none; }
  .schedule-layout { grid-template-columns: 1fr; padding: 24px 4%; }
  .class-panel { position: static; }
  .admin-grid { grid-template-columns: 1fr; }
  section { padding: 60px 4%; }
  .about-strip { padding: 50px 4%; }
  .page-hero { padding: 40px 4% 30px; }
}

/* Mobile */
@media (max-width: 680px) {

  /* Nav — hamburger */
  nav { padding: 0 4%; position: relative; }
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0; right: 0;
    background: rgba(250,247,242,0.98);
    backdrop-filter: blur(8px);
    flex-direction: column;
    padding: 0.5rem 0 1.5rem;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    gap: 0;
    list-style: none;
    z-index: 100;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 0.9rem 5%;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--charcoal);
  }
  .nav-links li:last-child a { border-bottom: none; }
  .nav-logo-img { height: 42px; }

  /* Hero */
  .hero {
    min-height: auto;
    padding: 50px 4% 60px;
    text-align: center;
  }
  .hero-content { max-width: 100%; }
  .hero-content h1 { font-size: clamp(1.6rem, 5vw, 2rem); }
  .hero-content p { font-size: 1rem; max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-actions .btn { flex: 1; text-align: center; min-width: 130px; }

  /* Sections */
  section { padding: 48px 4%; }
  .section-header { margin-bottom: 32px; }
  .section-header h2 { font-size: 1.8rem; }
  .about-strip { padding: 48px 4%; }
  .about-strip h2 { font-size: 1.6rem; }
  .page-hero { padding: 32px 4% 24px; }
  .page-hero h1 { font-size: 1.8rem; }

  /* Service cards */
  .services-grid { gap: 1rem; }
  .service-card { padding: 1.75rem 1.25rem; }

  /* Stats */
  .stats { gap: 1.5rem; }
  .stat-number { font-size: 2rem; }

  /* Calendar */
  .cal-day { min-height: 52px; padding: 4px; }
  .cal-day-name { font-size: 0.65rem; padding: 0.5rem 0; }
  .day-num { font-size: 0.78rem; width: 24px; height: 24px; }
  .day-dot { width: 6px; height: 6px; }
  .cal-nav { width: 38px; height: 38px; font-size: 1.1rem; }

  /* Form — prevent iOS zoom (must be ≥16px) */
  .form-group input,
  .form-group select { font-size: 1rem; padding: 0.85rem 1rem; }
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 1.5rem 1.1rem; }
  .register-layout { padding: 24px 4%; }

  /* Admin */
  .admin-layout { padding: 24px 4%; }
  .admin-login { margin: 60px auto; }
  .admin-card-body { padding: 1rem; }
  .admin-class-item { flex-direction: column; align-items: flex-start; gap: 0.5rem; }

  /* Footer */
  footer { padding: 40px 4% 24px; }
  footer .footer-links { gap: 1rem; }
  footer .nav-logo-img { height: 38px; padding: 3px 5px; }

  /* Buttons — ensure 44px touch target */
  .btn { padding: 0.85rem 1.75rem; min-height: 44px; }
  .btn-sm { padding: 0.6rem 1.1rem; min-height: 44px; }
  .cal-nav { min-width: 44px; min-height: 44px; }
}

/* ===== Auth Page ===== */
.auth-tabs {
  display: flex;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.auth-tab {
  flex: 1;
  padding: 0.65rem 1rem;
  background: none;
  border: none;
  font-family: 'Lato', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--mid);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.auth-tab--active { background: var(--red); color: var(--white); }
.auth-tab:hover:not(.auth-tab--active) { background: var(--grey-lt); color: var(--charcoal); }

.auth-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.25rem 0;
  color: var(--light);
  font-size: 0.82rem;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Social login buttons */
.btn-social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-family: 'Lato', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid var(--border);
  text-decoration: none;
  transition: box-shadow 0.2s, border-color 0.2s;
  margin-bottom: 0.75rem;
  color: var(--charcoal);
  background: var(--white);
}
.btn-social:hover { border-color: var(--grey); box-shadow: 0 2px 8px rgba(0,0,0,0.08); color: var(--charcoal); }
.btn-facebook { background: #1877F2; color: var(--white); border-color: #1877F2; }
.btn-facebook:hover { background: #166fe5; border-color: #166fe5; color: var(--white); box-shadow: 0 2px 8px rgba(24,119,242,0.3); }

/* Nav user greeting */
.nav-user-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--charcoal);
}
.nav-signout {
  font-size: 0.85rem;
  color: var(--mid);
  margin-left: 0.5rem;
}