/* ═══════════════════════════════════════════
   Throttle Fitness — Public Layout
   Navbar, Hero, Footer, Auth, Public Pages
   ═══════════════════════════════════════════ */

/* ── Public Navbar ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--glass-bg-heavy);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow), var(--glass-glow);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  box-shadow: 0 8px 32px rgba(0,0,0,0.1), var(--glass-glow);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.nav-logo .nav-logo-img {
  height: 45px;
}

.nav-logo-text {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: var(--glass-bg-light);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.nav-hamburger {
  display: none;
  font-size: 1.5rem;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.3rem 0.6rem;
  color: var(--text-primary);
  cursor: pointer;
}

.main-content {
  padding-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* ── Public Page Headers ── */
.main-content .page-header {
  padding: 4rem 0 3rem;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border-bottom: 1px solid var(--border-light);
  margin-bottom: var(--space-section);
}

.main-content .page-header .page-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.main-content .page-header .page-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin: 0;
}

/* ── Hero Section ── */
.hero {
  padding: 4rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, rgba(var(--primary-rgb), 0.05) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(var(--primary-rgb), 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.hero h1 .text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 4rem;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* ── Feature Cards ── */
.features-section {
  padding: 5rem 0;
}

.section-heading {
  text-align: center;
  margin-bottom: 3rem;
}

.section-heading h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.section-heading p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: all var(--transition);
  box-shadow: var(--glass-shadow), var(--glass-glow);
}

.feature-card:hover {
  box-shadow: var(--glass-shadow-hover), var(--glass-glow);
  transform: translateY(-4px);
  border-color: rgba(var(--primary-rgb), 0.2);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Public Footer ── */
.footer {
  background: var(--glass-bg-heavy);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--glass-border);
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  max-width: 280px;
}

.footer-brand .footer-logo-img {
  height: 44px;
  margin-bottom: 0.75rem;
}

.footer-social {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-glow);
}

.footer-section h4 {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-section a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.25rem 0;
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 1.5rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.78rem;
  color: var(--text-tertiary);
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ── Auth Pages ── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: var(--bg-secondary);
  background-image: radial-gradient(at 20% 50%, rgba(var(--primary-rgb), 0.05) 0%, transparent 50%),
    radial-gradient(at 80% 20%, rgba(var(--primary-rgb), 0.03) 0%, transparent 40%);
}

.auth-container {
  width: 100%;
  max-width: 440px;
  background: var(--glass-bg-heavy);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--glass-shadow), var(--glass-glow);
}

.auth-logo {
  text-align: center;
  margin-bottom: 1.5rem;
}

.auth-logo img {
  height: 56px;
  margin: 0 auto;
}

.auth-title {
  text-align: center;
  font-size: 1.4rem;
  margin-bottom: 0.3rem;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.25rem 0;
  color: var(--text-tertiary);
  font-size: 0.8rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.auth-footer {
  text-align: center;
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.auth-footer a {
  color: var(--primary);
  font-weight: 600;
}

/* ── Multi-Step Form ── */
.step-indicator {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.step-dot {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  transition: all var(--transition);
}

.step-dot.active {
  background: var(--primary);
  color: #fff;
}

.step-dot.completed {
  background: var(--success);
  color: #fff;
}

.step-line {
  width: 40px;
  height: 2px;
  background: var(--border);
  align-self: center;
}

.step-line.completed {
  background: var(--success);
}

.step-content {
  display: none;
  animation: fadeIn 0.4s ease;
}

.step-content.active {
  display: block;
}

.step-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
}

/* ── Trainer Card (Public) ── */
.trainer-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
  box-shadow: var(--glass-shadow), var(--glass-glow);
}

.trainer-card:hover {
  box-shadow: var(--glass-shadow-hover), var(--glass-glow);
  transform: translateY(-4px);
}

.trainer-card-photo {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--bg-secondary);
}

.trainer-card-body {
  padding: 1.25rem;
}

.trainer-card-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.trainer-card-specs {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.trainer-card-meta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

.trainer-card-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* ── Trainers Grid ── */
.trainers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* ── About / Terms / Static Pages ── */
.page-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 1.5rem 3rem;
}

.page-content h1 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.page-content h2 {
  font-size: 1.3rem;
  margin: 2rem 0 0.75rem;
  color: var(--primary);
}

.page-content p,
.page-content li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 0.75rem;
}

.page-content ul {
  padding-left: 1.5rem;
  list-style: disc;
}

.page-content a {
  color: var(--primary);
  text-decoration: underline;
}

/* ── Contact Form ── */
.contact-section {
  max-width: 600px;
  margin: 0 auto;
}

/* ── 404 / 500 pages ── */
.error-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.error-code {
  font-size: 6rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 1rem;
}

.error-page h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.error-page p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-hamburger {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--glass-bg-heavy);
    backdrop-filter: var(--glass-blur-heavy);
    -webkit-backdrop-filter: var(--glass-blur-heavy);
    border-bottom: 1px solid var(--glass-border);
    flex-direction: column;
    padding: 0.5rem;
    box-shadow: var(--glass-shadow);
    z-index: 99;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 0.75rem 1rem;
  }

  .hero {
    padding: 6rem 1.5rem 3rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 1.5rem;
  }

  .hero-stat-value {
    font-size: 1.8rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .auth-container {
    padding: 1.5rem;
  }

  .trainers-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .step-indicator {
    gap: 0.3rem;
  }

  .step-line {
    width: 20px;
  }
}