/* ==========================================================================
   DRIVEON - Monochromatic Black & White Mobility Platform Design System
   Color Palette:
   Primary Black: #000000 | Near Black: #111111 | Dark Gray: #222222
   Medium Gray: #666666 | Muted Gray: #888888 | Light Gray: #E5E5E5
   Very Light Gray: #F5F5F5 | Page/Card: #FFFFFF | Alt Section: #F7F7F7
   ========================================================================== */

:root {
  --color-black: #000000;
  --color-dark: #111111;
  --color-gray-900: #222222;
  --color-gray-600: #666666;
  --color-gray-400: #888888;
  --color-gray-200: #E5E5E5;
  --color-gray-100: #F5F5F5;
  --color-white: #FFFFFF;

  /* Semantic mappings to preserve existing class hooks */
  --color-primary: #000000;
  --color-primary-hover: #222222;
  --color-secondary: #FFFFFF;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F7F7F7;
  --color-surface: #FFFFFF;
  --color-surface-subtle: #F5F5F5;
  --color-accent: #000000;
  --color-accent-hover: #222222;
  --color-accent-light: #F5F5F5;
  --color-success: #111111;
  --color-success-light: #F5F5F5;
  --color-error: #222222;
  --color-error-light: #F5F5F5;
  --color-muted: #666666;
  --color-border: #E5E5E5;
  --color-border-dark: #888888;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 28px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.10);
  --shadow-accent: 0 6px 20px rgba(0, 0, 0, 0.15);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);

  --header-height: 72px;
  --mobile-nav-height: 64px;
  --container-max-width: 1280px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-bottom: 0;
}

body.has-bottom-nav {
  padding-bottom: calc(var(--mobile-nav-height) + 16px);
}

@media (min-width: 769px) {
  body.has-bottom-nav {
    padding-bottom: 0;
  }
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (min-width: 768px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

/* Typography Helpers */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; font-weight: 700; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; font-weight: 700; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; font-weight: 800; letter-spacing: -0.02em; }
.text-5xl { font-size: 3rem; line-height: 1.15; font-weight: 800; letter-spacing: -0.03em; }

.text-muted { color: var(--color-muted); }
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  min-height: 48px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
  text-align: center;
  user-select: none;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}
.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  font-weight: 700;
}
.btn-accent:hover {
  background-color: var(--color-accent-hover);
  color: #ffffff;
  box-shadow: var(--shadow-accent);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  background-color: var(--color-surface-subtle);
  border-color: var(--color-border-dark);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  padding: 8px 16px;
  min-height: 40px;
}
.btn-ghost:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.btn-sm {
  padding: 8px 16px;
  min-height: 38px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 32px;
  min-height: 56px;
  font-size: 1.0625rem;
}

.btn-block {
  width: 100%;
}

/* Badge & Pills */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-accent {
  background-color: var(--color-gray-100);
  color: var(--color-black);
  border: 1px solid var(--color-gray-200);
}

.badge-success {
  background-color: var(--color-gray-100);
  color: var(--color-dark);
  border: 1px solid var(--color-gray-200);
}

.badge-dark {
  background-color: var(--color-black);
  color: #ffffff;
}

.badge-gray {
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
  border: 1px solid var(--color-gray-200);
}

/* Card */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-gray-400);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 900;
  font-size: 1.375rem;
  letter-spacing: -0.04em;
  color: var(--color-black);
}

.brand-logo .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-black);
  display: inline-block;
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: 32px;
}

@media (min-width: 900px) {
  .desktop-nav {
    display: flex;
  }
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-black);
  font-weight: 600;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-black);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile Sticky Bottom Navigation */
.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mobile-nav-height);
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 99;
  padding-bottom: env(safe-area-inset-bottom, 0);
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.04);
}

@media (min-width: 769px) {
  .mobile-bottom-nav {
    display: none;
  }
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-600);
  font-size: 0.6875rem;
  font-weight: 600;
  gap: 3px;
  min-width: 56px;
  min-height: 44px;
  transition: color var(--transition-fast);
}

.mobile-nav-item svg {
  width: 22px;
  height: 22px;
  stroke-width: 2;
}

.mobile-nav-item.active {
  color: var(--color-black);
}

.mobile-nav-item.active svg {
  stroke: var(--color-black);
}

/* Sticky Bottom Action Bar for Mobile */
.sticky-bottom-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
  padding: 12px 20px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0));
  z-index: 98;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 -6px 20px rgba(0, 0, 0, 0.08);
}

@media (min-width: 769px) {
  .sticky-bottom-cta {
    display: none;
  }
}

/* Toast Notification */
.toast-container {
  position: fixed;
  top: 84px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background-color: var(--color-black);
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 250ms ease-out forwards;
  max-width: 380px;
  border: 1px solid #333333;
}

.toast.toast-success {
  background-color: var(--color-dark);
  border-color: var(--color-gray-600);
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Floating WhatsApp Support */
.floating-whatsapp {
  position: fixed;
  bottom: calc(var(--mobile-nav-height) + 16px);
  right: 20px;
  z-index: 90;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: #25D366;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  border: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

@media (min-width: 769px) {
  .floating-whatsapp {
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
  }
}

.floating-whatsapp:hover {
  transform: scale(1.08);
  background-color: #20ba5a;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.55);
}

/* Modal backdrop & container */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background-color: #ffffff;
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  position: relative;
  padding: 32px;
  animation: modalScale 200ms ease-out forwards;
}

@keyframes modalScale {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, #F5F5F5 25%, #E5E5E5 37%, #F5F5F5 63%);
  background-size: 400% 100%;
  animation: skeletonPulse 1.4s ease infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeletonPulse {
  0% { background-position: 100% 50%; }
  100% { background-position: 0 50%; }
}

/* Form Styles */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  font-size: 0.9375rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  color: var(--color-primary);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(17, 17, 17, 0.08);
}

.form-error {
  color: var(--color-error);
  font-size: 0.8125rem;
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Step Indicator */
.stepper-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  position: relative;
  gap: 4px;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 2;
  flex: 1;
  text-align: center;
}

.step-bubble {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: #ffffff;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-muted);
  transition: all var(--transition-fast);
}

@media (max-width: 480px) {
  .step-bubble {
    width: 30px;
    height: 30px;
    font-size: 0.75rem;
  }
}

.step-item.active .step-bubble {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: #ffffff;
}

.step-item.completed .step-bubble {
  border-color: var(--color-black);
  background-color: var(--color-black);
  color: #ffffff;
}

.step-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-muted);
}

@media (max-width: 480px) {
  .step-label {
    font-size: 0.6875rem;
  }
}

.step-item.active .step-label {
  color: var(--color-primary);
  font-weight: 700;
}

/* Responsive Table Wrapper & Overflow Guards */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 0;
}

/* Ensure no elements cause unwanted horizontal scroll */
img, svg, canvas {
  max-width: 100%;
}

@media (max-width: 480px) {
  .modal-content {
    padding: 24px 18px;
    border-radius: var(--radius-lg);
  }
}