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

/* ==========================================
   DESIGN TOKENS & ROOT VARIABLES
   ========================================== */
:root {
  /* Color Palette */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  --primary: #6366f1; /* Blue-Violet */
  --primary-hover: #4f46e5;
  --primary-light: #e0e7ff;
  
  --accent: #f97316; /* Energetic Orange */
  --accent-hover: #ea580c;
  --accent-light: #ffedd5;
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border-color: #e2e8f0;
  
  /* Typography */
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Layout & Spacing - Fluid clamp values */
  --spacing-xs: clamp(0.25rem, 1vw, 0.5rem);
  --spacing-sm: clamp(0.5rem, 1.5vw, 1rem);
  --spacing-md: clamp(1rem, 2.5vw, 2rem);
  --spacing-lg: clamp(2rem, 4vw, 4rem);
  --spacing-xl: clamp(4rem, 8vw, 8rem);
  
  --container-width: 1280px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-round: 9999px;
  
  /* Shadow & Depth */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px -1px rgba(99, 102, 241, 0.05), 0 2px 4px -1px rgba(99, 102, 241, 0.05), 0 10px 15px -3px rgba(0,0,0,0.05);
  --shadow-lg: 0 20px 25px -5px rgba(99, 102, 241, 0.08), 0 10px 10px -5px rgba(0,0,0,0.03);
  
  /* Animation */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

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

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

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

/* ==========================================
   LAYOUT STRUCTURE
   ========================================== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

main {
  flex-grow: 1;
}

/* ==========================================
   NAVIGATION BAR
   ========================================== */
.navbar {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 72px;
  display: flex;
  align-items: center;
  transition: var(--transition-normal);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 2px;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

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

.logo-svg,
.logo-img {
  flex-shrink: 0;
  display: block;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 32px;
}

.nav-link {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-primary);
  position: relative;
  padding: 6px 0;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

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

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

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

.nav-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-only-nav-item {
  display: none !important;
}

/* Navigation Hamburger Button for Mobile */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1100;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 6px 0;
  transition: var(--transition-fast);
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-normal);
  text-align: center;
  gap: 8px;
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

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

.btn-accent:hover {
  background-color: var(--accent-hover);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
}

.btn-secondary {
  background-color: white;
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  border-color: var(--text-muted);
  color: var(--text-primary);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background-color: var(--primary-light);
  transform: translateY(-2px);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  font-size: 1.1rem;
  padding: 14px 28px;
  border-radius: var(--radius-lg);
}

/* ==========================================
   INPUTS & FORMS
   ========================================== */
.form-group {
  margin-bottom: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.form-control {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 16px;
  background-color: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: var(--transition-fast);
  width: 100%;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23475569'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 16px;
  padding-right: 40px;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
  background-color: var(--text-primary);
  color: #94a3b8;
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
  margin-bottom: var(--spacing-lg);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-brand .logo {
  color: white;
}

.footer-brand p {
  color: #94a3b8;
  font-size: 0.9rem;
}

.footer-heading {
  color: white;
  font-size: 1.1rem;
  margin-bottom: 20px;
  font-family: var(--font-heading);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  color: #94a3b8;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
}

/* ==========================================
   RESPONSIVE DESIGN (MOBILE-FIRST)
   ========================================== */
@media (max-width: 991px) {
  .nav-menu {
    gap: 20px;
  }
}

@media (max-width: 768px) {
  /* Navigation mobile menu drawer */
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 72px);
    background-color: var(--bg-primary);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px;
    gap: 24px;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    overflow-y: auto;
    z-index: 999;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-link {
    font-size: 1.1rem;
    width: 100%;
    display: block;
    padding: 8px 0;
  }

  .nav-buttons {
    display: none !important;
  }

  .mobile-only-nav-item {
    display: block !important;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
}