/* ============================================================================
   MODAL SYSTEM - Production Grade Centered Modal
   Proper positioning, z-index management, and responsive design
   ============================================================================ */

:root {
  --modal-overlay-z: 99998;
  --modal-z: 99999;
  --modal-transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================================
   OVERLAY - Full screen dark background with blur
   ============================================================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: none;
  z-index: var(--modal-overlay-z);
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  pointer-events: auto;
}

.modal-overlay.show,
.modal-overlay.open {
  display: block;
}

/* ============================================================================
   MODAL - Centered content with proper sizing
   ============================================================================ */

.modal-wrap {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  z-index: var(--modal-z);
  display: none;
  flex-direction: column;
  background: var(--bg3, #1a2235);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  opacity: 0;
  transition: transform var(--modal-transition), opacity var(--modal-transition);
  pointer-events: auto;
}

.modal-wrap.show,
.modal-wrap.open {
  display: flex;
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* ============================================================================
   MODAL HEADER
   ============================================================================ */

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
  gap: 16px;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text, #f1f5f9);
  margin: 0;
  flex: 1;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--text2, #94a3b8);
  font-size: 20px;
  cursor: pointer;
  transition: all var(--modal-transition);
  flex-shrink: 0;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text, #f1f5f9);
  transform: scale(1.05);
}

.modal-close:active {
  transform: scale(0.95);
}

/* ============================================================================
   MODAL CONTENT - Scrollable body
   ============================================================================ */

.modal-body {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 24px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.modal-body::-webkit-scrollbar {
  width: 8px;
}

.modal-body::-webkit-scrollbar-track {
  background: transparent;
}

.modal-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

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

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 16px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
  gap: 12px;
}

/* ============================================================================
   BUTTON STYLES
   ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all var(--modal-transition);
  min-height: 40px;
  white-space: nowrap;
}

.btn-primary {
  background: #3b82f6;
  color: white;
}

.btn-primary:hover {
  background: #2563eb;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text2, #94a3b8);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text, #f1f5f9);
}

.btn-danger {
  background: #ef4444;
  color: white;
}

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.btn-success {
  background: #10b981;
  color: white;
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

/* ============================================================================
   FORM ELEMENTS
   ============================================================================ */

.modal-form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
  width: 100%;
}

.modal-form-group:last-child {
  margin-bottom: 0;
}

.modal-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text2, #94a3b8);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.modal-input,
.modal-select,
.modal-textarea {
  width: 100%;
  padding: 12px;
  background: var(--bg4, #1e293b);
  border: 1px solid var(--border2, rgba(255, 255, 255, 0.12));
  border-radius: 8px;
  color: var(--text, #f1f5f9);
  font-size: 14px;
  font-family: inherit;
  transition: all var(--modal-transition);
  min-height: 40px;
}

.modal-input::placeholder,
.modal-textarea::placeholder {
  color: var(--text3, #64748b);
}

.modal-input:focus,
.modal-select:focus,
.modal-textarea:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  background: var(--card, #111827);
}

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

.modal-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px 12px;
  padding-right: 36px;
  cursor: pointer;
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes slideDown {
  from {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  to {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.95);
  }
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 768px) {
  .modal-wrap {
    width: calc(100% - 32px);
    max-height: 95vh;
  }

  .modal-header {
    padding: 20px 16px;
  }

  .modal-body {
    padding: 20px 16px;
  }

  .modal-footer {
    padding: 16px;
    flex-direction: column-reverse;
  }

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

@media (max-width: 480px) {
  .modal-wrap {
    width: calc(100% - 16px);
    border-radius: 12px;
  }

  .modal-header {
    padding: 16px;
  }

  .modal-body {
    padding: 16px;
    font-size: 14px;
  }

  .modal-title {
    font-size: 16px;
  }

  .modal-close {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .modal-input,
  .modal-select,
  .modal-textarea {
    font-size: 16px;
  }
}

@media (max-width: 320px) {
  .modal-wrap {
    width: calc(100% - 12px);
  }

  .modal-header {
    padding: 12px;
  }

  .modal-body {
    padding: 12px;
  }

  .modal-footer {
    padding: 12px;
  }

  .modal-title {
    font-size: 14px;
  }

  .modal-close {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }
}

/* ============================================================================
   ACCESSIBILITY
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  .modal-wrap,
  .modal-overlay,
  .modal-close {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-color-scheme: dark) {
  .modal-wrap {
    color-scheme: dark;
  }
}

@media (prefers-contrast: more) {
  .modal-wrap {
    border-width: 2px;
    border-color: #fff;
  }

  .modal-overlay {
    background: rgba(0, 0, 0, 0.8);
  }
}

@media (hover: none) and (pointer: coarse) {
  .modal-footer button,
  .modal-close {
    min-height: 44px;
    min-width: 44px;
  }

  .modal-input,
  .modal-select,
  .modal-textarea {
    font-size: 16px;
  }

  .modal-close {
    -webkit-tap-highlight-color: transparent;
  }
}

/* ============================================================================
   PREVENT OVERFLOW
   ============================================================================ */

html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

.modal-overlay,
.modal-wrap {
  max-width: 100vw;
  overflow-x: hidden;
}

/* ============================================================================
   PREVENT BODY SCROLL
   ============================================================================ */

body.modal-open {
  overflow: hidden;
  height: 100vh;
}