/* ========================================
   ARVION - Premium Institutional Design System
   Strategic Corridor Land Intelligence
   ======================================== */

/* CSS Variables - Premium Color System */
:root {
  /* Premium Colors */
  --color-navy: #0B1F3B;
  --color-background: #F7F6F3;
  --color-white: #FFFFFF;
  --color-text: #111827;
  --color-text-muted: #6B7280;
  --color-medium-gray: #6B7280; /* Alias for backward compatibility */
  --color-border: #E5E7EB;
  --color-slate-light: #F1F5F9;
  --color-accent-gold: #B08D57;
  --color-accent: #B08D57;
  --color-light-gray: #F1F5F9;
  --color-error: #DC2626;
  --color-warning-muted: #B45309;
  
  /* Typography - Premium Fonts */
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Font Sizes - Desktop */
  --font-size-h1: 56px;
  --font-size-h2: 38px;
  --font-size-h3: 28px;
  --font-size-body: 17px;
  --font-size-small: 15px;
  --line-height-tight: 1.2;
  --line-height-base: 1.6;
  
  /* Spacing System */
  --section-padding: 100px;
  --container-max: 1160px;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 48px;
  --spacing-xl: 72px;
  
  /* Layout */
  --border-radius: 12px;
  --border-radius-sm: 6px;
  
  /* Shadows */
  --shadow-subtle: 0 1px 3px rgba(11, 31, 59, 0.06);
  --shadow-medium: 0 4px 12px rgba(11, 31, 59, 0.08);
  --shadow-hover: 0 6px 20px rgba(11, 31, 59, 0.12);
  
  /* Transitions */
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Mobile Overrides */
@media (max-width: 768px) {
  :root {
    --font-size-h1: 36px;
    --font-size-h2: 28px;
    --font-size-h3: 22px;
    --section-padding: 64px;
  }
}

/* ========================================
   BASE STYLES
   ======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography - Premium Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-navy);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--font-size-h1);
  font-weight: 700;
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

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

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

a:hover {
  opacity: 0.8;
}

/* ========================================
   LAYOUT
   ======================================== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--section-padding) 0;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
  position: sticky;
  top: 0;
  background: rgba(247, 246, 243, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
}

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

.header-phone {
  display: none;
}

@media (min-width: 769px) {
  .header-phone {
    display: flex !important;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    margin-right: 24px;
  }
  
  .header-phone a {
    color: var(--color-navy);
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: var(--transition);
  }
  
  .header-phone a:hover {
    color: var(--color-accent-gold);
  }
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.02em;
}

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

.nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 8px 0;
  white-space: nowrap;
}

.nav a:hover,
.nav a[style*="font-weight: 700"] {
  color: var(--color-navy);
}

.nav a[style*="font-weight: 700"]::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-navy);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 28px;
  color: var(--color-navy);
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    display: none;
    box-shadow: var(--shadow-medium);
  }
  
  .nav.active {
    display: flex;
  }
  
  .nav a {
    padding: var(--spacing-sm);
    width: 100%;
  }
  
  .nav-toggle {
    display: block;
  }
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, #162945 100%);
  color: var(--color-white);
  padding: calc(var(--section-padding) * 1.2) 0;
  text-align: center;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  font-size: 19px;
  color: rgba(255, 255, 255, 0.9);
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.7;
}

/* ========================================
   BUTTONS - Premium Style
   ======================================== */

.btn,
.button {
  display: inline-block;
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-body);
  border-radius: var(--border-radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  line-height: 1;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

.btn-primary:hover,
.button-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
  opacity: 1;
}

.btn-secondary,
.button-secondary {
  background: var(--color-white);
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn-secondary:hover,
.button-secondary:hover {
  background: var(--color-navy);
  color: var(--color-white);
  transform: translateY(-1px);
}

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

.btn-outline:hover,
.button-outline:hover {
  border-color: var(--color-navy);
  background: var(--color-slate-light);
}

.btn-large,
.btn-block {
  width: 100%;
  padding: 18px 32px;
  height: 56px;
}

/* ========================================
   CARDS - Premium Design
   ======================================== */

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-subtle);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-medium);
  transform: translateY(-2px);
}

.card h3 {
  font-size: 22px;
  margin-bottom: var(--spacing-sm);
  color: var(--color-navy);
}

.card p {
  color: var(--color-text-muted);
  flex-grow: 1;
}

/* ========================================
   CALLOUT COMPONENT - Institutional Style
   ======================================== */

.callout,
.alert {
  background: var(--color-slate-light);
  border-left: 4px solid var(--color-navy);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-sm);
  margin: var(--spacing-lg) 0;
}

.callout-title,
.alert strong {
  display: block;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.callout p,
.alert p {
  color: var(--color-text-muted);
  margin: 0;
}

.callout-warning {
  border-left-color: var(--color-warning-muted);
}

.callout-warning .callout-title {
  color: var(--color-warning-muted);
}

/* Remove bright backgrounds */
.alert-info,
.alert-success,
.alert-error {
  background: var(--color-slate-light);
  border-left: 4px solid var(--color-navy);
}

.alert-error {
  border-left-color: var(--color-warning-muted);
}

/* ========================================
   GRID SYSTEM
   ======================================== */

.grid {
  display: grid;
  gap: var(--spacing-lg);
  align-items: start;
}

.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(240px, 1fr));
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   FORMS - Premium Design
   ======================================== */

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 8px;
  font-size: 15px;
}

.required {
  color: var(--color-warning-muted);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--color-text);
  background: var(--color-white);
  transition: var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(11, 31, 59, 0.1);
}

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

.form-help {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  margin-top: 8px;
}

.form-errors {
  background: #FEF2F2;
  border-left: 4px solid var(--color-warning-muted);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--spacing-md);
}

.hidden {
  display: none;
}

/* ========================================
   WHATSAPP BUTTON - Subtle & Professional
   ======================================== */

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: #25D366;
  color: white;
  padding: 14px 20px;
  border-radius: 28px;
  box-shadow: var(--shadow-medium);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  z-index: 9999;
}

.whatsapp-float:hover {
  background-color: #128C7E;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  opacity: 1;
}

.whatsapp-float svg {
  width: 22px;
  height: 22px;
}

@media (max-width: 768px) {
  .whatsapp-float {
    bottom: 16px;
    right: 16px;
    padding: 12px 16px;
    font-size: 14px;
    gap: 8px;
  }
  
  .whatsapp-float svg {
    width: 20px;
    height: 20px;
  }
}

/* Ensure it doesn't overlap important content */
@media (max-width: 480px) {
  .whatsapp-float {
    padding: 10px;
    border-radius: 50%;
    gap: 0;
  }
  
  .whatsapp-float span {
    display: none;
  }
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer p {
  color: rgba(255, 255, 255, 0.75);
}

.footer a {
  color: rgba(255, 255, 255, 0.8);
}

.footer a:hover {
  color: var(--color-white);
  opacity: 1;
}

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

.footer h3 {
  color: var(--color-white);
  font-size: 18px;
  margin-bottom: var(--spacing-sm);
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-center {
  text-align: center;
}

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

.max-w-700 {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.max-w-800 {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.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); }

/* Badge Component */
.badge {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  background: var(--color-slate-light);
  color: var(--color-navy);
  border: 1px solid var(--color-border);
}

.badge-primary {
  background: var(--color-navy);
  color: var(--color-white);
  border-color: var(--color-navy);
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  .header,
  .whatsapp-float,
  .footer {
    display: none;
  }
}

/* ========================================
   ENHANCED COMPONENTS
   ======================================== */

/* Icon Box for Planning-Aware Section */
.icon-box {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.icon-box-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.icon-box-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-slate-light);
  border-radius: var(--border-radius-sm);
  color: var(--color-navy);
}

.icon-box h3 {
  margin-bottom: 0;
}

/* Card Structure Enhancement */
.card-header {
  margin-bottom: var(--spacing-sm);
}

.card-title {
  font-size: 22px;
  margin-bottom: 0;
}

.card-body {
  flex-grow: 1;
}

.card-body p:last-child {
  margin-bottom: 0;
}

.card-footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

/* Section Intro Text */
.section-intro {
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
  color: var(--color-text-muted);
  text-align: center;
}

/* Subtle Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Smooth scroll offset for anchor links */
html {
  scroll-padding-top: 80px;
}

/* Focus Visible for Accessibility */
*:focus-visible {
  outline: 2px solid var(--color-navy);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ========================================
   RESPONSIVE ADJUSTMENTS
   ======================================== */

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .btn,
  .button {
    padding: 14px 24px;
    font-size: 15px;
  }
  
  .card {
    padding: var(--spacing-md);
  }
}

/* ========================================
   TRUST INDICATORS
   ======================================== */

.trust-indicators {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-navy);
}

.trust-item svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent-gold);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .trust-indicators {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
  }
}

/* ========================================
   SECTION VARIANTS
   ======================================== */

.section-large {
  padding: calc(var(--section-padding) * 1.3) 0;
}

/* ========================================
   FOOTER SECTION
   ======================================== */

.footer-section {
  min-width: 0;
}

/* ========================================
   ALERT WARNING
   ======================================== */

.alert-warning {
  background: var(--color-slate-light);
  border-left: 4px solid var(--color-warning-muted);
}

/* ========================================
   LANDING PAGE STYLES
   ======================================== */

.lp-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.lp-header {
  background: linear-gradient(135deg, var(--color-navy) 0%, #162945 100%);
  color: var(--color-white);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.lp-header h1 {
  color: var(--color-white);
}

.lp-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.lp-logo svg {
  width: 40px;
  height: 40px;
}