:root {
  --primary: #0000FF;
  --accent: #FF0000;
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f1f5f9;
  --text-primary: #000000;
  --text-secondary: #334155;
  --border-color: #e2e8f0;
  --shadow-color: rgba(0, 0, 0, 0.08);
  color-scheme: light;
}

[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --border-color: #475569;
  --shadow-color: rgba(0, 0, 0, 0.4);
  color-scheme: dark;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.1;
}

h1 { font-size: clamp(2.25rem, 6vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.35rem, 3vw, 1.75rem); }

p { font-size: clamp(1rem, 1.8vw, 1.125rem); }

/* Header & Nav */
header {
  position: sticky;
  top: 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
}

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

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--text-primary);
  cursor: pointer;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

/* Footer */
footer {
  background: var(--bg-secondary);
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  border-radius: 24px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px var(--shadow-color);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

/* Cards */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: 0 2px 8px var(--shadow-color);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow-color);
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  cursor: pointer;
  z-index: 200;
  box-shadow: 0 2px 8px var(--shadow-color);
}

/* Forms */
input, textarea, select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
}

/* Responsive */
@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 12px var(--shadow-color);
  }
  .nav-links.open { display: flex; }
  .mobile-nav-toggle { display: flex; }
  .container { padding: 0 1rem; }
}

/* Prayer times table */
.prayer-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
}

.prayer-table th, .prayer-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.prayer-table th {
  font-weight: 600;
  color: var(--text-secondary);
}

/* Section spacing */
section {
  padding: 4rem 0;
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Header nav spacing floor (normalizer): keep the brand and the
   menu separated when the flex container runs out of width. */
header nav, header nav > div { gap: 1rem; flex-wrap: wrap; }
@media (max-width: 1280px) { header nav ul { gap: 1rem; } }