/* ===================================
   SitePulse Tech - Global Styles
   Premium Blue/Purple Gradient Design
   =================================== */

/* Import Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=DM+Sans:wght@400;500;600;700&display=swap');

/* CSS Variables - Color Palette */
:root {
  /* Primary Blues */
  --deep-blue: #0a1628;
  --dark-blue: #1e3a8a;
  --medium-blue: #3b82f6;
  --light-blue: #60a5fa;
  --sky-blue: #bfdbfe;
  
  /* Purples */
  --deep-purple: #4c1d95;
  --medium-purple: #7c3aed;
  --light-purple: #a78bfa;
  --lavender: #c4b5fd;
  
  /* Neutrals */
  --white: #ffffff;
  --off-white: #f8fafc;
  --light-gray: #e2e8f0;
  --medium-gray: #64748b;
  --dark-gray: #1e293b;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #1e3a8a 0%, #7c3aed 100%);
  --gradient-hero: linear-gradient(135deg, #0a1628 0%, #1e3a8a 50%, #4c1d95 100%);
  --gradient-card: linear-gradient(135deg, #3b82f6 0%, #7c3aed 100%);
  --gradient-accent: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
  --gradient-light: linear-gradient(135deg, #bfdbfe 0%, #c4b5fd 100%);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(30, 58, 138, 0.08);
  --shadow-md: 0 4px 16px rgba(30, 58, 138, 0.12);
  --shadow-lg: 0 8px 32px rgba(30, 58, 138, 0.16);
  --shadow-xl: 0 16px 48px rgba(30, 58, 138, 0.24);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Transitions */
  --transition-fast: 0.2s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--dark-gray);
  background: var(--off-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--deep-blue);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--medium-gray);
}

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

a:hover {
  color: var(--medium-purple);
}

/* Prevent anchor hover from affecting buttons */
a.btn,
button.btn {
  color: var(--white) !important;
  font-weight: 700;
}

a.btn:hover,
button.btn:hover {
  color: var(--white) !important;
  font-weight: 700;
}

a.btn-primary,
button.btn-primary {
  color: var(--white) !important;
  font-weight: 700;
}

a.btn-primary:hover,
button.btn-primary:hover {
  color: var(--white) !important;
  font-weight: 700;
}

a.btn-tool,
button.btn-tool {
  color: var(--white) !important;
  font-weight: 700;
}

a.btn-tool:hover,
button.btn-tool:hover {
  color: var(--white) !important;
  font-weight: 700;
}

/* Header & Navigation */
.header {
  background: var(--gradient-hero);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #ffffff 0%, #bfdbfe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.05);
}

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

.nav-links a {
  color: var(--sky-blue);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: width var(--transition-fast);
}

.nav-links a:hover {
  color: var(--white);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--white);
}

.nav-links a.active::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Hero Section */
.hero {
  background: var(--gradient-hero);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease-out;
}

.hero p {
  color: var(--sky-blue);
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-cta {
  animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  text-align: center;
  position: relative;
  overflow: hidden;
  color: var(--white);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--white);
  box-shadow: var(--shadow-md);
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--white) !important;
}

.btn-secondary {
  background: var(--white);
  color: var(--dark-blue);
  border: 2px solid var(--light-blue);
  font-weight: 700;
}

.btn-secondary:hover {
  background: var(--light-blue);
  color: var(--white);
  transform: translateY(-2px);
  font-weight: 700;
}

.btn-tool {
  background: var(--gradient-card);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 700;
}

.btn-tool:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
  color: var(--white) !important;
}

/* Section Styles */
.section {
  padding: var(--spacing-2xl) 0;
}

.section-dark {
  background: var(--deep-blue);
  color: var(--white);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--white);
}

.section-dark p {
  color: var(--sky-blue);
}

.section-light {
  background: var(--off-white);
}

.section-gradient {
  background: var(--gradient-primary);
  color: var(--white);
}

.section-gradient h2,
.section-gradient h3 {
  color: var(--white);
}

.section-gradient p {
  color: var(--lavender);
}

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

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto;
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Cards */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-card);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  font-size: 2rem;
}

.card h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--dark-blue);
}

.card p {
  color: var(--medium-gray);
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
}

/* Tool Card Specific */
.tool-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--light-gray);
  transition: all var(--transition-normal);
}

.tool-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--light-blue);
}

/* Form Elements */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: 600;
  color: var(--dark-blue);
  margin-bottom: var(--spacing-xs);
  font-size: 0.95rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  border: 2px solid var(--light-gray);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--dark-gray);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--medium-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--medium-blue);
}

/* Output Box */
.output-box {
  background: var(--deep-blue);
  border: 2px solid var(--dark-blue);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
  position: relative;
}

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.output-label {
  font-weight: 600;
  color: var(--sky-blue);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.output-content {
  background: rgba(30, 58, 138, 0.3);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md);
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 0.9rem;
  color: var(--light-blue);
  word-break: break-all;
  white-space: pre-wrap;
  max-height: 300px;
  overflow-y: auto;
}

.btn-copy {
  background: var(--medium-blue);
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-copy:hover {
  background: var(--light-blue);
  transform: scale(1.05);
}

.btn-copy.copied {
  background: #10b981;
}

/* Preview Box */
.preview-box {
  background: var(--white);
  border: 2px solid var(--light-gray);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.preview-label {
  font-weight: 600;
  color: var(--dark-blue);
  margin-bottom: var(--spacing-sm);
  display: block;
}

/* Footer */
.footer {
  background: var(--deep-blue);
  color: var(--sky-blue);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.footer-brand {
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  font-family: 'Outfit', sans-serif;
}

.footer-desc {
  color: var(--sky-blue);
  font-size: 0.95rem;
  line-height: 1.6;
}

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

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

.footer-links a {
  color: var(--sky-blue);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(191, 219, 254, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: var(--medium-gray);
  font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

.slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--deep-blue);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .tool-card {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 1.25rem;
  }
  
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .card {
    padding: var(--spacing-md);
  }
  
  .card-icon {
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
  }
}