/* ===== CSS VARIABLES & ROOT STYLES ===== */
:root {
  /* Core Color Palette */
  --primary-dark: #1a1a1a;
  --secondary-light: #f8f9fa;
  --background-white: #ffffff;
  --footer-dark: #2d3748;
  --button-blue: #3182ce;
  
  /* Section Backgrounds */
  --section-bg-light: #f7fafc;
  --section-bg-white: #ffffff;
  --section-bg-gray: #edf2f7;
  
  /* Semantic Colors */
  --success-color: #38a169;
  --error-color: #e53e3e;
  --warning-color: #dd6b20;
  
  /* Typography Scale */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-secondary: 'Source Sans Pro', sans-serif;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Border Radius */
  --radius-sm: 0.125rem;
  --radius-base: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

/* ===== BASE STYLES ===== */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--primary-dark);
  background-color: var(--background-white);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-primary);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--space-4) 0;
  color: var(--primary-dark);
}

h1 {
  font-size: var(--text-5xl);
  font-weight: 700;
  letter-spacing: -0.025em;
}

h2 {
  font-size: var(--text-4xl);
  font-weight: 600;
  letter-spacing: -0.025em;
}

h3 {
  font-size: var(--text-3xl);
  font-weight: 600;
}

h4 {
  font-size: var(--text-2xl);
  font-weight: 600;
}

h5 {
  font-size: var(--text-xl);
  font-weight: 600;
}

h6 {
  font-size: var(--text-lg);
  font-weight: 600;
}

p {
  margin: 0 0 var(--space-4) 0;
  line-height: 1.6;
}

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

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

a:focus {
  outline: 2px solid var(--button-blue);
  outline-offset: 2px;
  border-radius: var(--radius-base);
}

ul, ol {
  margin: 0 0 var(--space-4) 0;
  padding-left: var(--space-6);
}

li {
  margin-bottom: var(--space-2);
}

/* ===== SECTION BACKGROUNDS ===== */
.section-light {
  background-color: var(--section-bg-light);
}

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

.section-gray {
  background-color: var(--section-bg-gray);
}

/* ===== LAYOUT COMPONENTS ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.content-wrapper {
  padding: var(--space-16) 0;
}

.content-wrapper-sm {
  padding: var(--space-10) 0;
}

.content-wrapper-lg {
  padding: var(--space-20) 0;
}

/* ===== BORDERS & SEPARATORS ===== */
.divider {
  width: 100%;
  height: 1px;
  background-color: #e2e8f0;
  border: none;
  margin: var(--space-8) 0;
}

.divider-thin {
  width: 100%;
  height: 1px;
  background-color: var(--secondary-light);
  border: none;
  margin: var(--space-4) 0;
}

/* ===== CARD COMPONENTS ===== */
.card {
  background: var(--background-white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid #e2e8f0;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.card-header {
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--primary-dark);
  margin: 0;
}

.card-content {
  color: #4a5568;
}

.card-footer {
  border-top: 1px solid #e2e8f0;
  padding-top: var(--space-4);
  margin-top: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ===== BUTTON COMPONENTS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 500;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-family-primary);
}

.btn:focus {
  outline: 2px solid var(--button-blue);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--button-blue);
  color: white;
  border-color: var(--button-blue);
}

.btn-primary:hover {
  background-color: #2c5282;
  border-color: #2c5282;
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  background-color: #2a4365;
  border-color: #2a4365;
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--secondary-light);
  color: var(--primary-dark);
  border-color: #cbd5e0;
}

.btn-secondary:hover {
  background-color: #e2e8f0;
  border-color: #a0aec0;
  color: var(--primary-dark);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--button-blue);
  border-color: var(--button-blue);
}

.btn-outline:hover {
  background-color: var(--button-blue);
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

/* ===== FORM COMPONENTS ===== */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--primary-dark);
  margin-bottom: var(--space-2);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--primary-dark);
  background-color: var(--background-white);
  border: 1px solid #cbd5e0;
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--button-blue);
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.form-input::placeholder {
  color: #a0aec0;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: 40px;
}

.form-checkbox,
.form-radio {
  width: 1rem;
  height: 1rem;
  color: var(--button-blue);
  background-color: var(--background-white);
  border: 1px solid #cbd5e0;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.form-radio {
  border-radius: 50%;
}

.form-checkbox:focus,
.form-radio:focus {
  outline: 2px solid var(--button-blue);
  outline-offset: 2px;
}

/* ===== HEADER COMPONENTS ===== */
.header {
  background-color: var(--background-white);
  border-bottom: 1px solid #e2e8f0;
  padding: var(--space-4) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--primary-dark);
  text-decoration: none;
}

.header-logo:hover {
  color: var(--button-blue);
  text-decoration: none;
}

.header-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-6);
}

.header-menu a {
  color: var(--primary-dark);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.header-menu a:hover {
  color: var(--button-blue);
  text-decoration: none;
}

.header-menu a.active {
  color: var(--button-blue);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--primary-dark);
  margin: 5px 0;
  transition: 0.3s;
}

/* ===== FOOTER COMPONENTS ===== */
.footer {
  background-color: var(--footer-dark);
  color: white;
  padding: var(--space-12) 0 var(--space-6) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--space-4);
}

.footer-section p,
.footer-section a {
  color: #a0aec0;
  margin-bottom: var(--space-2);
}

.footer-section a:hover {
  color: white;
  text-decoration: none;
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section ul li {
  margin-bottom: var(--space-2);
}

.footer-bottom {
  border-top: 1px solid #4a5568;
  padding-top: var(--space-6);
  text-align: center;
  color: #a0aec0;
}

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

.text-primary { color: var(--primary-dark); }
.text-secondary { color: #4a5568; }
.text-muted { color: #a0aec0; }
.text-success { color: var(--success-color); }
.text-error { color: var(--error-color); }
.text-warning { color: var(--warning-color); }

.bg-primary { background-color: var(--primary-dark); }
.bg-secondary { background-color: var(--secondary-light); }
.bg-white { background-color: var(--background-white); }
.bg-light { background-color: var(--section-bg-light); }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.hidden { display: none; }
.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

.justify-center { justify-content: center; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Spacing Utilities */
.m-0 { margin: 0; }
.m-1 { margin: var(--space-1); }
.m-2 { margin: var(--space-2); }
.m-3 { margin: var(--space-3); }
.m-4 { margin: var(--space-4); }
.m-5 { margin: var(--space-5); }
.m-6 { margin: var(--space-6); }
.m-8 { margin: var(--space-8); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }
  
  .content-wrapper {
    padding: var(--space-10) 0;
  }
  
  .content-wrapper-lg {
    padding: var(--space-12) 0;
  }
  
  .header-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--background-white);
    border-top: 1px solid #e2e8f0;
    flex-direction: column;
    padding: var(--space-4);
    gap: var(--space-2);
    box-shadow: var(--shadow-md);
  }
  
  .header-menu.show {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .card {
    padding: var(--space-4);
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .content-wrapper {
    padding: var(--space-8) 0;
  }
  
  .btn {
    padding: var(--space-4);
    font-size: var(--text-sm);
  }
  
  .form-input {
    padding: var(--space-4);
  }
}

/* ===== HOVER & INTERACTIVE STATES ===== */
.interactive:hover {
  transform: translateY(-1px);
  transition: transform var(--transition-normal);
}

.interactive:active {
  transform: translateY(0);
}

/* Focus states for accessibility */
.focus-ring:focus {
  outline: 2px solid var(--button-blue);
  outline-offset: 2px;
  border-radius: var(--radius-base);
}

/* Selection styles */
::selection {
  background-color: rgba(49, 130, 206, 0.2);
  color: var(--primary-dark);
}

/* ===== ALERT COMPONENTS ===== */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  margin-bottom: var(--space-4);
}

.alert-success {
  background-color: #f0fff4;
  border-color: var(--success-color);
  color: #276749;
}

.alert-error {
  background-color: #fed7d7;
  border-color: var(--error-color);
  color: #c53030;
}

.alert-warning {
  background-color: #feebc8;
  border-color: var(--warning-color);
  color: #c05621;
}

.alert-info {
  background-color: #ebf8ff;
  border-color: var(--button-blue);
  color: #2c5282;
}

/* ===== ANIMATION & TRANSITIONS ===== */
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-in-left {
  animation: slideInLeft 0.5s ease-out;
}

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

.slide-in-right {
  animation: slideInRight 0.5s ease-out;
}

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


/* Cookie Banner Additional Styles for Tailwind */
.cookie-banner-hover-effect:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (prefers-reduced-motion: reduce) {
    .cookie-banner-hover-effect:hover {
        transform: none;
    }
}