/* Deliver2Me Design System */

:root {
  /* Modern Color Palette */
  --color-primary: #3b82f6;
  --color-primary-light: #dbeafe;
  --color-primary-dark: #1d4ed8;
  --color-primary-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);

  --color-success: #10b981;
  --color-success-light: #d1fae5;
  --color-success-dark: #047857;
  --color-success-gradient: linear-gradient(135deg, #10b981 0%, #047857 100%);

  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-warning-dark: #d97706;

  --color-danger: #ef4444;
  --color-danger-light: #fee2e2;
  --color-danger-dark: #b91c1c;
  --color-danger-gradient: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%);

  /* Accent Colors */
  --color-accent-purple: #a855f7;
  --color-accent-pink: #ec4899;
  --color-accent-cyan: #06b6d4;
  --color-accent-orange: #f97316;

  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  --color-white: #ffffff;

  /* Gradients */
  --gradient-bg: linear-gradient(135deg, #f0f9ff 0%, #f5f3ff 100%);
  --gradient-card: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #a855f7 100%);

  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.25rem;     /* 20px */
  --font-size-2xl: 1.5rem;     /* 24px */
  --font-size-3xl: 1.875rem;   /* 30px */
  --font-size-4xl: 2.25rem;    /* 36px */
  --font-size-5xl: 3rem;       /* 48px */

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */

  /* Border Radius */
  --radius-sm: 0.375rem;  /* 6px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* ============================================
   FOCUS STYLES (Accessibility)
   ============================================ */

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Skip link for keyboard navigation */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: var(--radius-md);
}

.skip-link:focus {
  top: 0;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: inherit;
  text-decoration: none;
  white-space: nowrap;
  gap: var(--space-2);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary Button */
.btn-primary {
  background: var(--color-primary-gradient);
  color: var(--color-white);
  transition: all var(--transition-base);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left var(--transition-base);
  border-radius: inherit;
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
}

.btn-primary:hover:not(:disabled)::before {
  left: 100%;
}

.btn-primary:active:not(:disabled),
.btn-primary:focus:not(:disabled) {
  transform: translateY(0);
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--color-gray-200);
  color: var(--color-gray-800);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-gray-300);
  box-shadow: var(--shadow-md);
}

/* Success Button */
.btn-success {
  background: var(--color-success-gradient);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
  transition: all var(--transition-base);
}

.btn-success:hover:not(:disabled) {
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
  transform: translateY(-2px);
}

/* Warning Button */
.btn-warning {
  background-color: var(--color-warning);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
  transition: all var(--transition-base);
}

.btn-warning:hover:not(:disabled) {
  background-color: var(--color-warning-dark);
  box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
  transform: translateY(-2px);
}

/* Danger Button */
.btn-danger {
  background: var(--color-danger-gradient);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
  transition: all var(--transition-base);
}

.btn-danger:hover:not(:disabled) {
  box-shadow: 0 8px 25px rgba(239, 68, 68, 0.4);
  transform: translateY(-2px);
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--gradient-card);
  border: 1px solid rgba(229, 231, 235, 0.8);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  transition: all var(--transition-base);
  transform: translateY(0);
  backdrop-filter: blur(10px);
}

.card:hover {
  box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-4px);
  background: linear-gradient(135deg, #ffffff 0%, #f0f4ff 100%);
}

.card-compact {
  padding: var(--space-4);
}

/* ============================================
   FORM INPUTS
   ============================================ */

.input-field,
.select-field,
textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-family: inherit;
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  background-color: var(--color-white);
  background-image: linear-gradient(var(--color-white), var(--color-white));
}

.input-field:hover,
.select-field:hover,
textarea:hover {
  border-color: var(--color-gray-400);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.input-field:focus,
.select-field:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-light), 0 4px 12px rgba(59, 130, 246, 0.2);
  background-color: var(--color-white);
}

.input-field:disabled,
.select-field:disabled,
textarea:disabled {
  background-color: var(--color-gray-100);
  color: var(--color-gray-500);
  cursor: not-allowed;
}

.input-field[aria-invalid="true"],
.select-field[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: var(--color-danger);
}

.input-field[aria-invalid="true"]:focus,
.select-field[aria-invalid="true"]:focus,
textarea[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 3px var(--color-danger-light);
}

/* Form Groups */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.form-label-required::after {
  content: " *";
  color: var(--color-danger);
}

.form-helper-text {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-top: var(--space-1);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-danger);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-danger-light);
  border-left: 3px solid var(--color-danger);
  border-radius: var(--radius-sm);
}

.form-error.hidden {
  display: none;
}

/* ============================================
   BADGES
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.badge:hover {
  transform: scale(1.08);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.badge-primary {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #bfdbfe 100%);
  color: var(--color-primary-dark);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-success {
  background: linear-gradient(135deg, var(--color-success-light) 0%, #a7f3d0 100%);
  color: var(--color-success-dark);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background: linear-gradient(135deg, var(--color-warning-light) 0%, #fed7aa 100%);
  color: var(--color-warning-dark);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
  background: linear-gradient(135deg, var(--color-danger-light) 0%, #fecaca 100%);
  color: var(--color-danger-dark);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-gray {
  background: linear-gradient(135deg, var(--color-gray-100) 0%, #e5e7eb 100%);
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-300);
}

/* ============================================
   ALERTS / STATUS BOXES
   ============================================ */

.alert {
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  border-left: 5px solid;
  margin-bottom: var(--space-4);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all var(--transition-base);
}

.alert-info {
  background: linear-gradient(135deg, rgba(219, 234, 254, 0.8) 0%, rgba(191, 219, 254, 0.8) 100%);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.alert-success {
  background: linear-gradient(135deg, rgba(209, 250, 229, 0.8) 0%, rgba(167, 243, 208, 0.8) 100%);
  border-color: var(--color-success);
  color: var(--color-success-dark);
}

.alert-warning {
  background: linear-gradient(135deg, rgba(254, 243, 199, 0.8) 0%, rgba(253, 230, 138, 0.8) 100%);
  border-color: var(--color-warning);
  color: var(--color-warning-dark);
}

.alert-error {
  background: linear-gradient(135deg, rgba(254, 226, 226, 0.8) 0%, rgba(254, 202, 202, 0.8) 100%);
  border-color: var(--color-danger);
  color: var(--color-danger-dark);
}

/* ============================================
   MODALS
   ============================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.5);
  padding: var(--space-4);
  z-index: 90;
}

.modal-overlay.open {
  display: flex;
  animation: fadeIn var(--transition-base);
}

.modal-overlay.open .modal-content {
  animation: scaleIn 0.3s var(--transition-base);
}

.modal-content {
  background-color: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  max-height: 90vh;
  overflow-y: auto;
  width: 100%;
  max-width: 48rem;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--space-6);
  gap: var(--space-4);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin: 0;
}

.modal-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin: var(--space-2) 0 0 0;
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-6);
  border-top: 1px solid var(--color-gray-200);
  justify-content: flex-end;
}

@media (max-width: 640px) {
  .modal-content {
    max-width: 100%;
  }

  .modal-footer {
    flex-direction: column-reverse;
  }
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 28rem;
}

.toast {
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  border: 1px solid;
  animation: slideIn var(--transition-base);
}

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

.toast-error {
  background-color: var(--color-danger-light);
  border-color: var(--color-danger);
  color: var(--color-danger-dark);
}

.toast-info {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

/* ============================================
   TABLES
   ============================================ */

.table-wrapper {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

thead {
  background-color: var(--color-gray-100);
  border-bottom: 1px solid var(--color-gray-200);
}

th {
  padding: var(--space-4);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
}

td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
  color: var(--color-gray-700);
}

tbody tr {
  transition: background-color var(--transition-base);
}

tbody tr:hover {
  background-color: var(--color-gray-50);
}

tbody tr:focus-within {
  background-color: var(--color-primary-light);
}

/* ============================================
   LOADING STATES
   ============================================ */

.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--color-gray-300);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 0.75rem;
  height: 0.75rem;
  border-width: 1.5px;
}

.spinner-lg {
  width: 1.5rem;
  height: 1.5rem;
  border-width: 3px;
}

.btn[disabled],
.btn.loading {
  opacity: 0.7;
  cursor: not-allowed;
  pointer-events: none;
}

.btn.loading::after {
  content: "";
  display: inline-block;
  width: 1rem;
  height: 1rem;
  margin-left: var(--space-2);
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-skeleton {
  background: linear-gradient(
    90deg,
    var(--color-gray-200) 25%,
    var(--color-gray-100) 50%,
    var(--color-gray-200) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

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

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideDown {
  from {
    transform: translateY(-10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* ============================================
   SEARCH HIGHLIGHTING
   ============================================ */

mark {
  background-color: #fef08a;
  padding: 2px 4px;
  border-radius: 3px;
  font-weight: 600;
  color: #713f12;
}

/* ============================================
   LINKS
   ============================================ */

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
  position: relative;
}

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background: var(--gradient-bg);
  background-attachment: fixed;
  min-height: 100vh;
}

h1, .h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
}

h2, .h2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
}

h3, .h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

h4, .h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

h5, .h5 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

h6, .h6 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

.text-muted {
  color: var(--color-gray-500);
}

.text-error {
  color: var(--color-danger);
}

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

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

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

.container {
  max-width: 96rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

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

.grid-cols-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
    --space-8: 1.5rem;
    --space-10: 2rem;
  }

  .modal-content {
    border-radius: var(--radius-xl);
  }

  .btn {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
  }

  table {
    font-size: var(--font-size-xs);
  }

  th, td {
    padding: var(--space-2) var(--space-3);
  }

  .grid-cols-auto {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --space-6: 1rem;
    --font-size-2xl: 1.25rem;
    --font-size-xl: 1rem;
  }

  body {
    padding: var(--space-4);
  }

  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
    width: 100%;
  }

  .modal-header,
  .modal-body,
  .modal-footer {
    padding: var(--space-4);
  }

  .modal-footer {
    flex-direction: column-reverse;
    gap: var(--space-3);
  }

  .modal-footer button {
    width: 100%;
  }

  .toast-container {
    left: var(--space-4);
    right: var(--space-4);
    max-width: none;
  }

  .card {
    padding: var(--space-4);
  }

  h1, .h1 {
    font-size: var(--font-size-3xl);
  }

  h2, .h2 {
    font-size: var(--font-size-2xl);
  }
}