/* Base Styles */
:root {
  /* Color Variables */
  --primary-color: #004aad;
  --primary-light: #1a5fbd;
  --primary-dark: #003b8e;
  --secondary-color: #fcb921;
  --secondary-light: #fdc645;
  --secondary-dark: #e6a814;
  --accent-color: #fe7040;
  --accent-light: #fe8c65;
  --accent-dark: #f25a23;
  
  /* Neutral Colors */
  --white: #ffffff;
  --light-gray: #f5f7fa;
  --medium-gray: #e2e8f0;
  --dark-gray: #64748b;
  --black: #1e293b;
  
  /* Utility Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  
  /* Font Variables */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  
  /* Spacing Variables (based on 8px grid) */
  --space-1: 0.25rem; /* 4px */
  --space-2: 0.5rem;  /* 8px */
  --space-3: 1rem;    /* 16px */
  --space-4: 1.5rem;  /* 24px */
  --space-5: 2rem;    /* 32px */
  --space-6: 3rem;    /* 48px */
  --space-7: 4rem;    /* 64px */
  --space-8: 6rem;    /* 96px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Box sizing rules */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Typography */
html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.5;
  color: var(--black);
  background-color: var(--white);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-3);
  font-weight: 700;
  line-height: 1.2;
  color: var(--black);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.0rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
  margin-bottom: var(--space-3);
}

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

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

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

ul {
  list-style: none;
}

/* Utility Classes */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.btn {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

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

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

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--black);
}

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

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

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

.section-title {
  text-align: center;
  margin-bottom: var(--space-5);
  position: relative;
  padding-bottom: var(--space-2);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background-color: var(--secondary-color);
}

/* Layout & Sections */
main {
  min-height: calc(100vh - 200px);
}

section {
  padding: var(--space-6) 0;
}

/* Header */
#main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: background-color var(--transition-normal);
}

#main-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
}

.logo a {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
  text-decoration: none;
}

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

/* Navigation */
nav {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: var(--space-3);
}

.nav-links li a {
  color: var(--black);
  font-weight: 600;
  text-decoration: none;
  padding: var(--space-2);
  transition: all var(--transition-fast);
  position: relative;
}

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

.nav-links li a.active {
  color: var(--primary-color);
  background-color: rgba(0, 74, 173, 0.1);
  border-radius: var(--radius-md);
}

.nav-links li a.active::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--primary-color);
}
.auth-buttons {
  display: flex;
  gap: var(--space-2);
}

.auth-buttons .btn {
  padding: var(--space-2) var(--space-3);
  font-size: 0.9rem;
}
.burger {
  display: none;
  cursor: pointer;
}

.burger div {
  width: 25px;
  height: 3px;
  background-color: var(--black);
  margin: 5px;
  transition: all 0.3s ease;
}

/* Footer */
footer {
  background-color: var(--primary-dark);
  color: var(--white);
  padding: var(--space-5) 0 var(--space-3);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  gap: var(--space-4);
}

.footer-logo {
  flex: 1 1 100%;
  max-width: 300px;
  margin-bottom: var(--space-4);
}

.footer-logo img {
  padding-bottom: 15px;
}

.footer-logo a {
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--space-2);
  display: inline-block;
}

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

.footer-logo p {
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-links {
  flex: 1 1 60%;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-column {
  flex: 1;
  min-width: 150px;
}

.footer-column h3 {
  color: var(--white);
  margin-bottom: var(--space-3);
  font-size: 1.1rem;
}

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

.footer-column a {
  color: var(--white);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer-column a:hover {
  opacity: 1;
  text-decoration: underline;
}

.social-links {
  display: flex;
  gap: var(--space-2);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
  transition: background-color var(--transition-fast);
}

.social-links a:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
}

.footer-bottom p {
  margin-bottom: var(--space-2);
}

.footer-legal {
  display: flex;
  gap: var(--space-3);
}

.footer-legal a {
  color: var(--white);
  opacity: 0.8;
}

.footer-legal a:hover {
  opacity: 1;
}

/* Newsletter Section */
.newsletter {
  background-color: var(--light-gray);
  padding: var(--space-6) 0;
}

.newsletter-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.newsletter-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
  justify-content: center;
}

.newsletter-form input {
  flex: 1;
  min-width: 250px;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-md);
  font-size: 1rem;
}

.newsletter-form button {
  padding: var(--space-2) var(--space-4);
}

/* Tab System */
.tab-container {
  margin: var(--space-4) 0;
}

.tab-header {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--medium-gray);
}

.tab-btn {
  padding: var(--space-2) var(--space-4);
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--dark-gray);
}

.tab-btn:hover {
  color: var(--primary-color);
}

.tab-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.tab-content {
  position: relative;
}

.tab-pane {
  display: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.tab-pane.active {
  display: block;
  opacity: 1;
}

/* CTA Sections */
.cta-section {
  background-color: var(--primary-color);
  color: var(--white);
  padding: var(--space-6) 0;
  text-align: center;
}

.cta-content h2 {
  color: var(--white);
  margin-bottom: var(--space-3);
}

.cta-content p {
  max-width: 800px;
  margin: 0 auto var(--space-4);
  opacity: 0.9;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

.cta-section .btn-primary {
  background-color: var(--secondary-color);
  color: var(--black);
}

.cta-section .btn-primary:hover {
  background-color: var(--secondary-light);
}

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

.cta-section .btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Responsive Media Queries */
@media screen and (max-width: 992px) {
  .footer-content {
    flex-direction: column;
  }
  .auth-buttons {
    gap: var(--space-1);
  }
  
  .auth-buttons .btn {
    padding: var(--space-1) var(--space-2);
  }
  .footer-links {
    flex: 1;
    width: 100%;
  }
}

@media screen and (max-width: 768px) {
  body {
    font-size: 0.95rem;
  }
  
  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    width: 100%;
    flex-direction: column;
    align-items: center;
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    opacity: 0;
    transition: all 0.3s ease-in-out;
    padding: var(--space-3) 0;
    z-index: -1;
    gap: 0;
  }
  
  .nav-links.nav-active {
    transform: translateY(0);
    opacity: 1;
    z-index: 999;
  }
  
  .nav-links li {
    width: 100%;
    text-align: center;
  }
  
  .nav-links li a {
    display: block;
    padding: var(--space-2) var(--space-3);
  }
  
  .burger {
    display: block;
  }

  .auth-buttons {
    margin-bottom: var(--space-2);
  }
  
  .footer-links {
    justify-content: space-around;
  }
  
  .footer-column {
    flex: 0 0 40%;
    margin-bottom: var(--space-4);
  }
  
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .cta-buttons .btn {
    width: 100%;
    max-width: 300px;
  }
}

@media screen and (max-width: 576px) {
  .auth-buttons {
    width: 100%;
    justify-content: center;
  }
  
  .auth-buttons .btn {
    flex: 1;
    text-align: center;
  }
  .footer-column {
    flex: 0 0 100%;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-form input,
  .newsletter-form button {
    width: 100%;
  }
}

/* Animation Classes */
.animate-on-load {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.6s ease-out forwards;
}

.animate-on-load:nth-child(1) {
  animation-delay: 0.2s;
}

.animate-on-load:nth-child(2) {
  animation-delay: 0.4s;
}

.animate-on-load:nth-child(3) {
  animation-delay: 0.6s;
}

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

/* Smooth scroll padding for fixed header */
html {
  scroll-padding-top: 80px;
}