:root {
  /* Colors - Immobiliare.it Style */
  --primary: #E31B23;
  /* Immobiliare Red */
  --primary-dark: #B9151B;
  --primary-light: #FF4D55;
  --secondary: #005792;
  /* Deep Blue for secondary actions */
  --secondary-dark: #004270;
  --accent: #E31B23;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* Gradients - Removed for flat design */
  --gradient-primary: #E31B23;
  --gradient-secondary: #005792;
  --gradient-accent: #E31B23;
  --gradient-success: #10b981;

  /* Neutrals - Light Theme */
  --bg-primary: #F4F5F7;
  /* Light Gray Page BG */
  --bg-secondary: #FFFFFF;
  /* White Card BG */
  --bg-tertiary: #E5E7EB;
  /* Border/Divider */
  --text-primary: #1F2937;
  /* Dark Gray */
  --text-secondary: #6B7280;
  /* Medium Gray */
  --text-muted: #9CA3AF;

  /* Glass effect - Removed */
  --glass-bg: #FFFFFF;
  --glass-border: #E5E7EB;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-glow: none;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: var(--font-size-base);
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: #111827;
  /* Darker black for headings */
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-weight: 600;
}

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Card Style (Replaces Glass) */
.glass-card {
  background: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  backdrop-filter: none;
}

.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--bg-tertiary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  /* Less rounded */
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  display: none;
  /* Remove hover effect */
}

.btn:hover::before {
  display: none;
}

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

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

.btn-secondary {
  background: var(--secondary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--secondary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  color: white;
  text-decoration: none;
}

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

.btn-outline:hover {
  background: var(--primary);
  color: white;
  text-decoration: none;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
  background: var(--text-muted);
}

/* Form Elements */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: all var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

/* Checkbox & Radio */
.checkbox-group,
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.checkbox-item,
.radio-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
}

.checkbox-item input[type="checkbox"],
.radio-item input[type="radio"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--primary);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.badge-success {
  background: var(--success);
  color: white;
}

.badge-warning {
  background: var(--warning);
  color: white;
}

.badge-danger {
  background: var(--danger);
  color: white;
}

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

/* Progress Bar */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(90deg,
      transparent,
      rgba(255, 255, 255, 0.3),
      transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }

  100% {
    transform: translateX(100%);
  }
}

/* Alert */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid;
}

.alert-info {
  background: rgba(6, 182, 212, 0.1);
  border-color: var(--secondary);
  color: var(--text-primary);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--success);
  color: var(--text-primary);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--warning);
  color: var(--text-primary);
}

.alert-danger {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--danger);
  color: var(--text-primary);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Utilities */
.text-center {
  text-align: center;
}

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

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

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.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);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.flex {
  display: flex;
}

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

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

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Loading Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--bg-tertiary);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Accordion Styles for Seller Page */
.request-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--spacing-md);
  cursor: pointer;
}

.request-summary-info {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
}

.summary-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.summary-item strong {
  color: var(--text-primary);
}

.toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  color: var(--primary);
  transition: transform var(--transition-base);
}

.request-card.expanded .toggle-btn {
  transform: rotate(180deg);
}

.request-details {
  border-top: 1px solid var(--bg-tertiary);
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-md);
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Custom Select Styling for Cross-Browser Consistency */
.form-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-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='%236B7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}
/* Lock Icon for Mandatory Criteria */
.lock-icon {
    font-size: 0.8em;
    margin-left: 4px;
    vertical-align: middle;
}