/*
========================================
SKYFIREWORK WEBSITE — STYLE.CSS
✅ Pure CSS | ✅ Mobile-first | ✅ No frameworks | ✅ Fully commented
Built for: Chrome, Edge, Safari (iOS/macOS), Firefox
Author: Clawdbot · 2024
========================================
*/

/* =============== BASE RESET & TYPOGRAPHY =============== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* 🔑 Brand Colors — Edit here to change theme */
  --primary-color: #FF6B6B;    /* Coral red — Mecha Warzone energy */
  --secondary-color: #4ECDC4;  /* Teal — FitnessGAL vitality */
  --accent-color: #6A5ACD;     /* Slate blue — Ninja mystique */
  --text-dark: #1A1A2E;        /* Deep navy — primary text */
  --text-light: #F8F9FA;       /* Off-white — light bg text */
  --bg-light: #FFFFFF;         /* Pure white — light mode */
  --bg-dark: #121212;          /* True black — dark mode */
  --border: #E0E0E0;           /* Soft gray — borders */
  
  /* 📏 Typography scale (rem-based) */
  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.25rem;     /* 20px */
  --font-size-2xl: 1.5rem;     /* 24px */
  --font-size-3xl: 1.875rem;   /* 30px */
  --font-size-4xl: 2.25rem;    /* 36px */
  --font-size-5xl: 3rem;       /* 48px */
  
  /* 🎯 Spacing scale (8px base) */
  --space-xxs: 0.25rem;  /* 4px */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 0.75rem;   /* 12px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
}

/* Apply base font & line height globally */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
  overflow-x: hidden;
}

/* Focus visible for keyboard users (accessibility) */
a:focus, button:focus, [tabindex]:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* =============== LAYOUT & CONTAINERS =============== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header with logo + nav */
header {
  background-color: var(--bg-light);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--text-dark);
  text-decoration: none;
}

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

.nav {
  display: flex;
  gap: var(--space-lg);
}

.nav a {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-dark);
  text-decoration: none;
  padding: var(--space-xs) var(--space-md);
  border-radius: 4px;
  transition: all 0.2s ease;
}

.nav a:hover {
  background-color: rgba(255, 107, 107, 0.1);
  color: var(--primary-color);
}

/* Main content area */
main {
  padding: var(--space-2xl) 0;
}

/* =============== HERO SECTION =============== */
.hero {
  text-align: center;
  padding: var(--space-2xl) 0;
}

.hero h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--space-md);
  color: var(--text-dark);
}

.hero p {
  font-size: var(--font-size-xl);
  max-width: 700px;
  margin: 0 auto var(--space-xl);
  color: #444;
}

/* =============== PRODUCT GRID =============== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-xl);
}

/* Desktop: 3 columns */
@media (min-width: 768px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
  }
}

.product {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.product-header {
  padding: var(--space-lg) var(--space-md);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.product-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0;
}

.product-subtitle {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  margin-top: var(--space-xs);
  font-weight: 400;
}

.product-body {
  padding: var(--space-md);
}

.product-body p {
  font-size: var(--font-size-base);
  margin: var(--space-sm) 0;
  color: #333;
}

/* =============== FOOTER =============== */
footer {
  background-color: var(--bg-dark);
  color: var(--text-light);
  padding: var(--space-xl) 0;
  margin-top: var(--space-2xl);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.copyright {
  font-size: var(--font-size-sm);
  opacity: 0.7;
}

.privacy-link {
  color: var(--secondary-color);
  text-decoration: none;
  font-weight: 600;
}

.privacy-link:hover {
  text-decoration: underline;
}

/* =============== MOBILE MENU (HAMBURGER) =============== */
.mobile-menu {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: white;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  border-radius: 0 0 8px 8px;
  overflow: hidden;
  z-index: 99;
}

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

.mobile-menu a {
  display: block;
  padding: var(--space-md);
  font-size: var(--font-size-lg);
  color: var(--text-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.mobile-menu a:hover {
  background-color: rgba(255, 107, 107, 0.05);
  color: var(--primary-color);
}

/* =============== RESPONSIVE BREAKPOINTS =============== */
/* Tablet portrait */
@media (min-width: 480px) and (max-width: 767px) {
  .hero h1 { font-size: var(--font-size-3xl); }
  .hero p { font-size: var(--font-size-lg); }
}

/* Desktop */
@media (min-width: 768px) {
  .header-inner {
    padding: var(--space-lg) 0;
  }
  .hero h1 { font-size: var(--font-size-4xl); }
  .hero p { font-size: var(--font-size-xl); }
  .nav {
    gap: var(--space-xl);
  }
}

/* Large desktop */
@media (min-width: 1200px) {
  .container {
    padding: 0 var(--space-xl);
  }
  .hero {
    padding: var(--space-2xl) 0;
  }
}

/* =============== DARK MODE SUPPORT (optional) =============== */
/* Uncomment below if you add system dark mode toggle later */
/*
@media (prefers-color-scheme: dark) {
  :root {
    --text-dark: #F8F9FA;
    --bg-light: #121212;
    --border: #333;
  }
  body {
    background-color: var(--bg-light);
    color: var(--text-dark);
  }
  .product-header {
    background: linear-gradient(135deg, #FF6B6B, #4ECDC4);
  }
}
*/

/* =============== PRINT STYLES (bonus) =============== */
@media print {
  * {
    box-shadow: none !important;
    text-shadow: none !important;
  }
  .nav, .mobile-menu, .copyright {
    display: none;
  }
  body {
    background: white;
    color: black;
  }
}