/* JustMailIt - Modern Design System */

:root {
  /* Brand Colors */
  --primary: #a8e6cf;
  --primary-light: #e8f8f3;
  --primary-dark: #7dd4b0;
  --accent: #8b9fff;
  --gradient-start: #a8e6cf;
  --gradient-end: #8b9fff;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(139, 159, 255, 0.2);
  --glass-blur: 14px;
  
  /* UI Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f0f5ff;
  --bg-tertiary: #e8f8f3;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  
  /* Status Colors */
  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --info: #3b82f6;
  --info-light: #dbeafe;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
}

/* Base Styles */
body {
  font-family: var(--font-sans);
  background: linear-gradient(135deg, #f8faff 0%, #ffffff 100%);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  font-size: 16px;
}

/* Form Controls - Consistent Sizing */
.form-control, .form-select {
  font-size: 0.9375rem !important;
  padding: 0.625rem 0.875rem !important;
  border-radius: var(--radius) !important;
  border: 1.5px solid rgba(139, 159, 255, 0.2) !important;
}

/* Checkboxes and Radio Buttons - Proper Sizing */
.form-check-input {
  width: 1.125rem !important;
  height: 1.125rem !important;
  margin-top: 0.1875rem !important;
  border: 2px solid rgba(139, 159, 255, 0.3) !important;
  border-radius: 0.25rem !important;
}

.form-check-input:checked {
  background-color: var(--accent) !important;
  border-color: var(--accent) !important;
}

/* Button Sizing - Consistent Across All Pages */
.btn {
  font-size: 0.9375rem !important;
  padding: 0.625rem 1.25rem !important;
  border-radius: var(--radius) !important;
  font-weight: 600 !important;
  transition: all 0.3s ease !important;
}

.btn-sm {
  font-size: 0.875rem !important;
  padding: 0.5rem 1rem !important;
}

.btn-lg {
  font-size: 1.0625rem !important;
  padding: 0.75rem 1.5rem !important;
}

/* Icon Sizing */
.bi {
  font-size: 1rem;
}

.icon-lg {
  font-size: 1.5rem;
}

.icon-xl {
  font-size: 2rem;
}

/* Modern Navbar (glassmorphism) */
.navbar {
  background: var(--glass-bg) !important;
  -webkit-backdrop-filter: saturate(180%) blur(var(--glass-blur));
  backdrop-filter: saturate(180%) blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 8px 24px rgba(139, 159, 255, 0.12);
}
.navbar .nav-link { color: var(--text-secondary); font-weight: 600; }
.navbar .nav-link:hover, .navbar .nav-link.active { color: var(--accent) !important; }

/* Modern Card Styles */
.card-modern {
  background: var(--bg-primary);
  border: 1px solid rgba(139, 159, 255, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.card-modern:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(139, 159, 255, 0.15);
}

.card-modern-header {
  background: linear-gradient(135deg, rgba(139, 159, 255, 0.05), rgba(168, 230, 207, 0.05));
  padding: var(--spacing-md);
  border-bottom: 1px solid rgba(139, 159, 255, 0.1);
}

.card-modern-body {
  padding: var(--spacing-md);
}

/* Modern Buttons */
.btn-modern-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: white;
  border: none;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius);
  font-weight: var(--font-weight-semibold);
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(139, 159, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.btn-modern-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(139, 159, 255, 0.4);
  color: white;
}

/* Bootstrap primary override to match theme */
.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border: none;
  border-radius: var(--radius-full);
  padding: 0.65rem 1.2rem;
  box-shadow: 0 4px 12px rgba(139, 159, 255, 0.3);
}
.btn-primary:hover { box-shadow: 0 6px 16px rgba(139, 159, 255, 0.4); transform: translateY(-1px); }
.btn-outline-primary { color: var(--accent); border-color: var(--accent); border-radius: var(--radius-full); }
.btn-outline-primary:hover { background: var(--accent); color: white; }

.btn-modern-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: 0.5s;
}

.btn-modern-primary:hover::before {
  left: 100%;
}

.btn-modern-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid rgba(139, 159, 255, 0.2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: var(--font-weight-semibold);
  transition: all 0.3s ease;
}

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

.btn-modern-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: var(--font-weight-semibold);
  transition: all 0.3s ease;
}

.btn-modern-outline:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 159, 255, 0.3);
}

/* Modern Input Fields */
.input-modern {
  border: 2px solid rgba(139, 159, 255, 0.15);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  background: var(--bg-primary);
}

.input-modern:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(139, 159, 255, 0.1);
  background: var(--bg-primary);
}

.input-group-modern {
  position: relative;
}

.input-group-modern .input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.1rem;
}

.input-group-modern .input-modern {
  padding-left: 2.75rem;
}

/* Modern Badges */
.badge-modern {
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  font-size: 0.8rem;
  letter-spacing: 0.3px;
}

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

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

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

.badge-modern-info {
  background: var(--info-light);
  color: var(--info);
}

.badge-modern-primary {
  background: var(--primary-light);
  color: var(--primary);
}

/* Modern Tables */
.table-modern {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.table-modern thead {
  background: linear-gradient(135deg, rgba(139, 159, 255, 0.05), rgba(168, 230, 207, 0.05));
}

.table-modern thead th {
  border-bottom: 2px solid rgba(139, 159, 255, 0.1);
  padding: 1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table-modern tbody tr {
  border-bottom: 1px solid rgba(139, 159, 255, 0.05);
  transition: all 0.2s ease;
}

.table-modern tbody tr:hover {
  background: rgba(139, 159, 255, 0.02);
}

.table-modern tbody td {
  padding: 1rem;
  vertical-align: middle;
}

/* Modern Modal */
.modal-modern .modal-content {
  border: none;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.modal-modern .modal-header {
  background: linear-gradient(135deg, rgba(139, 159, 255, 0.05), rgba(168, 230, 207, 0.05));
  border-bottom: 2px solid rgba(139, 159, 255, 0.1);
  padding: var(--spacing-md) var(--spacing-lg);
}

.modal-modern .modal-title {
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.modal-modern .modal-body {
  padding: var(--spacing-lg);
}

.modal-modern .modal-footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(139, 159, 255, 0.1);
  padding: var(--spacing-md) var(--spacing-lg);
}

/* Icon Styles */
.icon-modern {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: all 0.3s ease;
}

.icon-modern-primary {
  background: linear-gradient(135deg, rgba(139, 159, 255, 0.1), rgba(168, 230, 207, 0.15));
  color: var(--primary);
}

.icon-modern-success {
  background: var(--success-light);
  color: var(--success);
}

.icon-modern-warning {
  background: var(--warning-light);
  color: var(--warning);
}

.icon-modern-danger {
  background: var(--danger-light);
  color: var(--danger);
}

.icon-modern-info {
  background: var(--info-light);
  color: var(--info);
}

.icon-modern-lg {
  width: 80px;
  height: 80px;
  font-size: 2.5rem;
  border-radius: var(--radius-lg);
}

/* Progress Bar */
.progress-modern {
  height: 12px;
  border-radius: var(--radius-full);
  background: rgba(139, 159, 255, 0.1);
  overflow: hidden;
}

.progress-bar-modern {
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
  position: relative;
  overflow: hidden;
}

.progress-bar-modern::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 Styles */
.alert-modern {
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid;
}

.alert-modern-success {
  background: var(--success-light);
  border-left-color: var(--success);
  color: #047857;
}

.alert-modern-warning {
  background: var(--warning-light);
  border-left-color: var(--warning);
  color: #b45309;
}

.alert-modern-danger {
  background: var(--danger-light);
  border-left-color: var(--danger);
  color: #b91c1c;
}

.alert-modern-info {
  background: var(--info-light);
  border-left-color: var(--info);
  color: #1d4ed8;
}

/* Loading Spinner */
.spinner-modern {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(139, 159, 255, 0.1);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Stats Card */
.stats-card-modern {
  background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
  border: 1px solid rgba(139, 159, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

.stats-card-modern:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stats-card-modern .stats-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: var(--spacing);
}

.stats-card-modern .stats-value {
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.stats-card-modern .stats-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
}

/* Utility Classes */
.text-gradient {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
}

.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-4px);
}

/* ============================================
   MOBILE-FIRST RESPONSIVE DESIGN
   ============================================ */

/* Base mobile optimizations */
* {
  -webkit-tap-highlight-color: rgba(168, 230, 207, 0.2);
}

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

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Touch-friendly minimum sizes */
button, a, input, select, textarea {
  min-height: 44px;
  min-width: 44px;
}

/* Tablet and Mobile Devices */
@media (max-width: 992px) {
  body {
    font-size: 15px;
  }
  
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  h4 { font-size: 1.1rem; }
  
  .card-modern {
    border-radius: var(--radius-md);
  }
}

/* Mobile Devices */
@media (max-width: 768px) {
  body {
    font-size: 14px;
  }
  
  /* Container spacing */
  .container, .container-fluid {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  /* Typography adjustments */
  h1 { font-size: 1.5rem; line-height: 1.3; }
  h2 { font-size: 1.35rem; line-height: 1.3; }
  h3 { font-size: 1.2rem; line-height: 1.4; }
  h4 { font-size: 1.05rem; line-height: 1.4; }
  h5 { font-size: 0.95rem; }
  
  p { line-height: 1.6; }
  
  /* Card improvements */
  .card, .card-modern {
    margin-bottom: 1rem;
    border-radius: var(--radius-md);
  }
  
  .card-body, .card-modern-body {
    padding: 1rem !important;
  }
  
  .card-header {
    padding: 0.875rem 1rem;
  }
  
  /* Form elements - larger and touch-friendly */
  .form-control, .form-select {
    font-size: 1rem !important;
    padding: 0.875rem 1rem !important;
    min-height: 48px;
    border: 2px solid #e5e7eb;
    border-radius: var(--radius);
    -webkit-appearance: none;
  }
  
  .form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(168, 230, 207, 0.2);
  }
  
  .form-control-lg {
    padding: 1rem 1.25rem !important;
    font-size: 1.05rem !important;
    min-height: 52px;
  }
  
  .form-label {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
  }
  
  textarea.form-control {
    min-height: 120px;
    line-height: 1.5;
  }
  
  select.form-control, .form-select {
    background-size: 16px 12px;
    background-position: right 0.75rem center;
    padding-right: 2.5rem !important;
  }
  
  /* File inputs */
  input[type="file"].form-control {
    padding: 0.75rem !important;
  }
  
  input[type="file"].form-control::file-selector-button {
    padding: 0.5rem 1rem;
    margin-right: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
  }
  
  /* Input groups */
  .input-group-text {
    padding: 0.875rem 1rem;
    font-size: 1rem;
  }
  
  /* Buttons - larger and more visible */
  .btn {
    padding: 0.875rem 1.5rem !important;
    font-size: 1rem !important;
    min-height: 48px;
    border-radius: var(--radius);
    font-weight: 600;
  }
  
  .btn-lg {
    padding: 1rem 2rem !important;
    font-size: 1.05rem !important;
    min-height: 56px;
    border-radius: var(--radius-md);
  }
  
  .btn-sm {
    padding: 0.625rem 1rem !important;
    font-size: 0.9rem !important;
    min-height: 40px;
  }
  
  .btn-modern-primary,
  .btn-modern-secondary,
  .btn-modern-outline {
    padding: 0.875rem 1.5rem !important;
    font-size: 1rem !important;
    min-height: 48px;
  }
  
  /* Tables - responsive */
  .table-responsive {
    border-radius: var(--radius);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .table {
    font-size: 0.9rem;
  }
  
  .table td, .table th {
    padding: 0.75rem 0.5rem;
    white-space: nowrap;
  }
  
  /* Modals */
  .modal-dialog {
    margin: 1rem;
  }
  
  .modal-content {
    border-radius: var(--radius-md);
  }
  
  .modal-header, .modal-footer {
    padding: 1rem;
  }
  
  .modal-body {
    padding: 1rem;
  }
  
  /* Alerts */
  .alert {
    padding: 0.875rem 1rem;
    font-size: 0.95rem;
    border-radius: var(--radius);
  }
  
  /* Badges and pills */
  .badge {
    padding: 0.5em 0.75em;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
  }
  
  /* Spacing utilities - adjusted for mobile */
  .mb-4, .my-4 { margin-bottom: 1.25rem !important; }
  .mb-5, .my-5 { margin-bottom: 2rem !important; }
  .mt-4, .my-4 { margin-top: 1.25rem !important; }
  .mt-5, .my-5 { margin-top: 2rem !important; }
  
  .p-4 { padding: 1.25rem !important; }
  .p-5 { padding: 1.75rem !important; }
  
  /* Grid adjustments */
  .row {
    margin-left: -0.5rem;
    margin-right: -0.5rem;
  }
  
  .row > * {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
  
  /* Flexbox utilities */
  .d-flex {
    gap: 0.5rem;
  }
  
  /* Links and text */
  a {
    word-break: break-word;
  }
  
  .text-muted {
    font-size: 0.9rem;
  }
  
  .small, small {
    font-size: 0.875rem;
  }
}

/* Small Mobile Devices */
@media (max-width: 576px) {
  body {
    font-size: 13px;
  }
  
  .container, .container-fluid {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }
  
  h1 { font-size: 1.35rem; }
  h2 { font-size: 1.2rem; }
  h3 { font-size: 1.1rem; }
  h4 { font-size: 1rem; }
  
  .card-body, .card-modern-body {
    padding: 0.875rem !important;
  }
  
  .form-control, .form-select {
    font-size: 0.95rem !important;
    padding: 0.75rem 0.875rem !important;
  }
  
  .btn {
    padding: 0.75rem 1.25rem !important;
    font-size: 0.95rem !important;
  }
  
  .btn-lg {
    padding: 0.875rem 1.5rem !important;
    font-size: 1rem !important;
  }
  
  .modal-dialog {
    margin: 0.5rem;
  }
}

/* Landscape Mobile */
@media (max-width: 896px) and (orientation: landscape) {
  .modal-dialog {
    max-height: 90vh;
    overflow-y: auto;
  }
  
  .form-control, textarea.form-control {
    font-size: 0.95rem !important;
  }
}