/**
 * EasyPZ Tools - Main Stylesheet
 * Production-ready styles based on design system
 */

/* ============================================
   IMPORTS & FONTS
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700&display=swap');

/* ============================================
   CSS VARIABLES (Design System)
   ============================================ */
:root {
  /* Brand Colors */
  --color-primary: #4CAF50;
  --color-primary-dark: #185E20;
  --color-primary-light: #A8E063;
  
  /* Background Colors */
  --color-bg-cream: #FDFDF4;
  --color-bg-white: #FFFFFF;
  --color-bg-light: #F8F9FA;
  
  /* Text Colors */
  --color-text-primary: #0F172A;
  --color-text-secondary: #64748B;
  --color-text-muted: #94A3B8;
  
  /* UI Colors */
  --color-border: #E2E8F0;
  --color-shadow: rgba(15, 23, 42, 0.08);
  --color-hover: rgba(76, 175, 80, 0.08);
  
  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08);
  
  /* Container */
  --container-max-width: 1280px;
  --container-padding: 1.5rem;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-cream);
  min-height: 100vh;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  background-color: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--container-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text-primary);
  text-decoration: none;
}

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

.logo-icon {
  width: 32px;
  height: 32px;
}

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

.logo-tools {
  color: var(--color-text-secondary);
  font-weight: 600;
}

.header-nav {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

.nav-link {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color 0.2s ease;
}

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

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
  padding: var(--spacing-4xl) var(--container-padding);
  text-align: center;
  background-color: var(--color-bg-white);
}

.hero-container {
  max-width: 900px;
  margin: 0 auto;
}

.hero-logo {
  margin-bottom: var(--spacing-xl);
}

.hero-logo-image {
  width: 80px;
  height: 80px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
}

.hero-search {
  margin-bottom: var(--spacing-xl);
}

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

/* ============================================
   SEARCH BAR
   ============================================ */
.search-bar {
  max-width: 600px;
  margin: 0 auto;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: var(--spacing-lg);
  color: var(--color-text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-lg) 3.5rem;
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  outline: none;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-body);
  border-radius: var(--radius-full);
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(76, 175, 80, 0.4);
  color: white;
}

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

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-hover);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: white;
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: var(--spacing-4xl) var(--container-padding);
}

.section-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.section-footer {
  text-align: center;
  margin-top: var(--spacing-3xl);
}

/* ============================================
   TOOL GRID
   ============================================ */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.tool-grid-empty {
  text-align: center;
  padding: var(--spacing-3xl);
  color: var(--color-text-muted);
}

/* ============================================
   TOOL CARD
   ============================================ */
.tool-card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.tool-card-disabled {
  opacity: 0.6;
}

.tool-card-disabled:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
}

.tool-card-link {
  display: block;
  padding: var(--spacing-xl);
  color: var(--color-text-primary);
  text-decoration: none;
  height: 100%;
}

.tool-card-link.disabled {
  cursor: not-allowed;
}

.tool-card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(168, 224, 99, 0.1) 100%);
  border-radius: var(--radius-md);
}

.tool-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.tool-card-description {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.tool-card-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background-color: var(--color-bg-light);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background-color: var(--color-text-primary);
  color: var(--color-bg-light);
  padding: var(--spacing-3xl) var(--container-padding) var(--spacing-xl);
  margin-top: var(--spacing-4xl);
}

.footer-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.footer-logo {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.footer-brand-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  color: white;
}

.footer-tagline {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 600;
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-xl);
  text-align: center;
}

.footer-copyright {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-sm);
}

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .hidden-mobile {
    display: none;
  }
  
  .section-title {
    font-size: 1.875rem;
  }
  
  .tool-grid {
    grid-template-columns: 1fr;
  }
  
  .header-nav {
    gap: var(--spacing-md);
  }
  
  .nav-link {
    font-size: 0.875rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 1rem;
  }
  
  .hero-section {
    padding: var(--spacing-2xl) var(--container-padding);
  }
  
  .section {
    padding: var(--spacing-2xl) var(--container-padding);
  }
  
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
  text-align: center;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }