/* ============================================
   DARK SKY SoCal - Stargazing in Southern California
   Author: Sean Kelley
   Theme: Dark (matte black bg, matte white text)
   Accent: #D4943A (warm amber/gold)
   Layout: Single column
   ============================================ */

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

/* --- CSS Variables --- */
:root {
  --color-bg: #282828;
  --color-text: #F5F5F5;
  --color-accent: #D4943A;
  --color-accent-hover: #E8A84E;
  --color-border: #404040;
  --color-surface: #333333;
  --color-muted: #999999;

  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-heading: var(--font-body);
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;

  --max-width: 1200px;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--color-accent);
  color: var(--color-bg);
  padding: var(--space-sm) var(--space-md);
  font-weight: 700;
  text-decoration: none;
  z-index: 1000;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-text);
  outline-offset: 2px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

p {
  margin-bottom: var(--space-md);
  max-width: 70ch;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

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

a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

strong {
  font-weight: 700;
}

/* --- Layout --- */
.site-wrapper {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* --- Header --- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.site-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
}

.site-name:hover {
  color: var(--color-accent);
}

.site-tagline {
  font-size: 0.875rem;
  color: var(--color-muted);
  font-weight: 400;
}

/* --- Navigation --- */
.site-nav {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.nav-list li a {
  display: block;
  padding: var(--space-md) var(--space-lg);
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-list li a:hover,
.nav-list li a.active {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.nav-list li a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: -3px;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--color-text);
  color: var(--color-text);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-body);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-toggle:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.nav-toggle:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

/* --- Main Content (Single Column) --- */
.layout-single {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

/* --- Hero Section --- */
.hero {
  text-align: center;
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-xl);
}

.hero h1 {
  max-width: 16ch;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-muted);
  max-width: 55ch;
  margin: 0 auto var(--space-lg);
  line-height: 1.6;
}

.hero-accent {
  color: var(--color-accent);
  font-weight: 700;
}

.hero-divider {
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  border: none;
  margin: var(--space-lg) auto 0;
}

/* --- Content Sections --- */
.content-section {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.content-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

/* --- Location Cards --- */
.location-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.location-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
}

.location-card h3 {
  color: var(--color-accent);
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.location-meta {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.location-card p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 0;
}

/* --- Tips List --- */
.tips-list {
  list-style: none;
  margin-top: var(--space-lg);
}

.tips-list li {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-md);
  align-items: baseline;
}

.tips-list li:last-child {
  border-bottom: none;
}

.tip-number {
  flex-shrink: 0;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.tip-text {
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* --- CTA Section --- */
.cta-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-xl);
  text-align: center;
  margin-top: var(--space-xl);
}

.cta-section h2 {
  margin-bottom: var(--space-sm);
}

.cta-section p {
  color: var(--color-muted);
  margin: 0 auto var(--space-lg);
}

.cta-link {
  display: inline-block;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-accent);
  color: var(--color-bg);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background-color 0.2s ease;
}

.cta-link:hover {
  background: var(--color-accent-hover);
  color: var(--color-bg);
}

.cta-link:focus-visible {
  outline: 3px solid var(--color-text);
  outline-offset: 3px;
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  margin-top: var(--space-xl);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.footer-links {
  list-style: none;
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  font-size: 0.8125rem;
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ============================================
   RESPONSIVE
   ============================================ */

@media (min-width: 640px) {
  .location-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .location-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
    margin: var(--space-sm) 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-list li a {
    padding: var(--space-md);
    border-top: 1px solid var(--color-border);
  }

  .nav-inner {
    flex-wrap: wrap;
  }

  .header-inner {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }

  .cta-section {
    padding: var(--space-lg);
  }
}