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

/* === CSS Variables — Peak Fitness Theme === */
:root {
  --color-primary: #ff6b35;
  --color-primary-dark: #e55520;
  --color-bg: #1a1a2e;
  --color-bg-alt: #16213e;
  --color-bg-card: #22223a;
  --color-text: #ffffff;
  --color-text-light: rgba(255, 255, 255, 0.65);
  --color-border: rgba(255, 255, 255, 0.1);

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  --max-width: 1200px;
  --border-radius: 8px;
  --transition: 0.3s ease;
}

/* === Base === */
html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

a:hover {
  color: var(--color-primary-dark);
}

/* === Skip Link === */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--spacing-xs) var(--spacing-sm);
  z-index: 1000;
}

.skip-link:focus {
  top: 0;
}

/* === Layout === */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

section {
  padding: var(--spacing-xl) 0;
}

section:nth-child(even) {
  background-color: var(--color-bg-alt);
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-3xl); font-weight: 800; }
h2 { font-size: var(--font-size-2xl); font-weight: 700; text-align: center; margin-bottom: var(--spacing-md); }
h3 { font-size: var(--font-size-xl); font-weight: 700; }

p {
  margin-bottom: var(--spacing-sm);
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
}

/* === Focus styles for keyboard navigation === */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* === Header === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 26, 46, 0.95);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
  backdrop-filter: blur(8px);
}

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

.logo {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--color-primary);
}

.logo:hover {
  color: var(--color-text);
}

/* === Navigation === */
.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-menu a {
  color: var(--color-text-light);
  font-weight: 500;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.nav-menu a:hover {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition);
}

.hamburger {
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* === Hero === */
.hero {
  padding: var(--spacing-xl) 0;
  text-align: center;
  background: linear-gradient(135deg, #1a1a2e 0%, #0f1945 55%, #1a1a2e 100%);
  min-height: 85vh;
  display: flex;
  align-items: center;
}

.hero-label {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 5rem);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 580px;
  margin: 0 auto var(--spacing-md);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* === Section Subtitle === */
.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  max-width: 620px;
  margin: -1rem auto var(--spacing-md);
  font-size: var(--font-size-lg);
}

/* === About === */
.about-inner {
  display: grid;
  gap: var(--spacing-md);
}

.about-heading {
  text-align: left;
}

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

.about-stats {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.stat {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* === Card Grid === */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  border-color: var(--color-primary);
}

.card-tag {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.65rem;
  border-radius: 4px;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
}

.card h3 {
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* === 4-Column Grid Variant === */
.card-grid-4 {
  grid-template-columns: 1fr;
}

/* === Testimonials === */
.testimonial-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  font-style: italic;
}

.testimonial-card p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.testimonial-card footer {
  font-style: normal;
  font-weight: 600;
  color: var(--color-primary);
  font-size: var(--font-size-sm);
}

/* === Pricing === */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  align-items: start;
}

.pricing-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.pricing-card-featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), 0 8px 32px rgba(255, 107, 53, 0.15);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  padding: 0.25rem 1.1rem;
  border-radius: 100px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.04em;
}

.pricing-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.pricing-amount {
  margin: var(--spacing-sm) 0;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
}

.pricing-price {
  font-family: var(--font-heading);
  font-size: 3.25rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.pricing-period {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
}

.pricing-note {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: var(--spacing-md);
}

.pricing-features li {
  position: relative;
  padding: 0.6rem 0 0.6rem 1.6rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* === Contact === */
.contact-inner {
  display: grid;
  gap: var(--spacing-md);
}

.contact-info h3 {
  color: var(--color-primary);
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

.contact-info h3:first-child {
  margin-top: 0;
}

.contact-info address {
  font-style: normal;
}

.contact-info address p {
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.contact-info address a {
  color: var(--color-text-light);
}

.contact-info address a:hover {
  color: var(--color-primary);
}

.contact-info p {
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* === Contact Form === */
.contact-form {
  width: 100%;
}

.form-group {
  margin-bottom: var(--spacing-sm);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  background: var(--color-bg-card);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
}

/* === Footer === */
.site-footer {
  background: #0d0d1a;
  color: var(--color-text-light);
  text-align: center;
  padding: var(--spacing-md) 0;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.02em;
}

.footer-logo span {
  color: var(--color-primary);
}

.site-footer address {
  font-style: normal;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

.site-footer address a {
  color: var(--color-text-light);
}

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

.site-footer p {
  margin-bottom: 0.25rem;
  font-size: var(--font-size-sm);
}

/* === Animations === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Responsive — Tablet (768px+) === */
@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .about-inner {
    grid-template-columns: 2fr 1fr;
    align-items: start;
  }

  .about-stats {
    flex-direction: column;
  }

  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: center;
  }

  .contact-inner {
    grid-template-columns: 1fr 2fr;
    align-items: start;
  }

  section {
    padding: var(--spacing-xl) 0;
  }
}

/* === Responsive — Desktop (1200px+) === */
@media (min-width: 1200px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .card-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* === Responsive — Mobile nav === */
@media (max-width: 767px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.98);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm);
    gap: 0;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu li {
    border-bottom: 1px solid var(--color-border);
  }

  .nav-menu li:last-child {
    border-bottom: none;
  }

  .nav-menu a {
    display: block;
    padding: var(--spacing-sm) 0;
  }

  .site-header .container {
    position: relative;
  }

  .pricing-card-featured {
    transform: none;
  }
}