/* style.css - Zen Wellness & Spa */
@import 'variables.css';

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.8;
  font-weight: 300;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.1;
  margin-bottom: var(--space-sm);
  font-weight: 400;
  letter-spacing: 0.05em;
}

h1 { font-size: clamp(3rem, 6vw, 5rem); }
h2 { font-size: clamp(2.2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2.2rem); }

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

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

a:hover {
  color: var(--accent-color-hover);
}

ul {
  list-style: none;
}

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

/* Accessibility - Focus visible */
:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 6px;
}

/* Layout Utilities */
.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  border-radius: 4px;
  font-family: var(--font-body);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--accent-color);
  color: white;
}
.btn-primary:hover {
  background-color: transparent;
  color: var(--accent-color);
  border-color: var(--accent-color);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-color);
  border-color: var(--text-color);
}
.btn-secondary:hover {
  background-color: var(--text-color);
  color: var(--bg-color);
}

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  background-color: hsla(35, 30%, 97%, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  padding: 1rem 0;
  transition: background-color var(--transition-normal), padding var(--transition-normal);
}

[data-theme="dark"] .header {
  background-color: hsla(30, 10%, 12%, 0.9);
}

.header.scrolled {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

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

.logo {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: 0.05em;
}
.logo svg {
  stroke: var(--accent-color);
}

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

.nav-link {
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  color: var(--text-color);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1px;
  background-color: var(--accent-color);
  transition: width var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--accent-color);
}

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-color);
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-fast);
}
.theme-toggle:hover { opacity: 0.7; }
.theme-toggle svg { width: 20px; height: 20px; stroke-width: 1.5; }

/* Mobile menu toggle */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-color);
}
.mobile-menu-btn svg { width: 28px; height: 28px; stroke-width: 1.5; }

@media (max-width: 768px) {
  .mobile-menu-btn { display: block; }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-color);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    transition: right var(--transition-normal);
    z-index: 999;
  }
  .nav-links.open { right: 0; }
  .nav-link { font-size: 1.5rem; }
}

/* Cards */
.card {
  background-color: var(--card-bg);
  padding: var(--space-md);
  border: 1px solid transparent;
  transition: all var(--transition-normal);
}
.card:hover {
  border-color: var(--accent-color);
  transform: translateY(-10px);
}

/* Footer */
.footer {
  background-color: var(--card-bg);
  border-top: 1px solid var(--border-color);
  padding: var(--space-xl) 0 var(--space-md);
  margin-top: var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.footer h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
  color: var(--accent-color);
}

.footer-links li { margin-bottom: 0.8rem; }
.footer-links a { color: var(--text-color-muted); }
.footer-links a:hover { color: var(--text-color); }

.footer-bottom {
  text-align: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-color);
  color: var(--text-color-muted);
  font-size: 0.85rem;
}