/* ============================================================
   VOLVIX UI — Modales, formularios, toasts y loading
   Vanilla CSS, dark mode, responsive, animaciones <200ms
   ============================================================ */

:root {
  --vx-bg: #0f172a;
  --vx-card: #1e293b;
  --vx-card-2: #273449;
  --vx-border: #334155;
  --vx-border-strong: #475569;
  --vx-text: #f1f5f9;
  --vx-text-2: #cbd5e1;
  --vx-text-muted: #94a3b8;
  --vx-primary: #3b82f6;
  --vx-primary-hover: #2563eb;
  --vx-danger: #ef4444;
  --vx-danger-hover: #dc2626;
  --vx-success: #10b981;
  --vx-warn: #f59e0b;
  --vx-info: #06b6d4;
  --vx-radius: 10px;
  --vx-radius-sm: 6px;
  --vx-shadow: 0 25px 60px -15px rgba(0,0,0,.6), 0 10px 25px -10px rgba(0,0,0,.4);
  --vx-z-modal: 9000;
  --vx-z-toast: 9500;
  --vx-z-loading: 9800;
}

/* ---------- BACKDROP & MODAL ---------- */
.vx-backdrop {
  position: fixed; inset: 0;
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--vx-z-modal);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  animation: vx-fade-in 160ms ease-out;
}
.vx-backdrop.vx-closing { animation: vx-fade-out 140ms ease-in forwards; }

.vx-modal {
  background: var(--vx-card);
  color: var(--vx-text);
  border: 1px solid var(--vx-border);
  border-radius: var(--vx-radius);
  box-shadow: var(--vx-shadow);
  width: 100%;
  max-height: calc(100vh - 32px);
  display: flex; flex-direction: column;
  animation: vx-slide-up 180ms cubic-bezier(.2,.9,.3,1);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
}
.vx-modal.vx-size-sm { max-width: 440px; }
.vx-modal.vx-size-md { max-width: 600px; }
.vx-modal.vx-size-lg { max-width: 1100px; }

.vx-backdrop.vx-closing .vx-modal { animation: vx-slide-down 140ms ease-in forwards; }

.vx-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--vx-border);
}
.vx-modal-title { margin: 0; font-size: 17px; font-weight: 600; color: var(--vx-text); }
.vx-modal-desc { margin: 4px 0 0; font-size: 13px; color: var(--vx-text-muted); }
.vx-modal-close {
  background: transparent; border: 0; color: var(--vx-text-muted);
  font-size: 22px; line-height: 1; cursor: pointer; padding: 4px 8px;
  border-radius: var(--vx-radius-sm);
}
.vx-modal-close:hover { background: var(--vx-card-2); color: var(--vx-text); }

.vx-modal-body {
  padding: 20px 22px;
  overflow-y: auto;
  flex: 1 1 auto;
}

.vx-modal-footer {
  display: flex; gap: 10px; justify-content: flex-end;
  padding: 14px 22px;
  border-top: 1px solid var(--vx-border);
  background: rgba(0,0,0,.15);
  border-radius: 0 0 var(--vx-radius) var(--vx-radius);
}

/* ---------- BUTTONS ---------- */
.vx-btn {
  border: 1px solid var(--vx-border-strong);
  background: var(--vx-card-2);
  color: var(--vx-text);
  padding: 9px 18px;
  border-radius: var(--vx-radius-sm);
  font-size: 14px; font-weight: 500;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  transition: background 120ms, border-color 120ms;
}
.vx-btn:hover:not(:disabled) { background: var(--vx-border); }
.vx-btn:disabled { opacity: .55; cursor: not-allowed; }
.vx-btn.vx-primary { background: var(--vx-primary); border-color: var(--vx-primary); color: #fff; }
.vx-btn.vx-primary:hover:not(:disabled) { background: var(--vx-primary-hover); border-color: var(--vx-primary-hover); }
.vx-btn.vx-danger { background: var(--vx-danger); border-color: var(--vx-danger); color: #fff; }
.vx-btn.vx-danger:hover:not(:disabled) { background: var(--vx-danger-hover); border-color: var(--vx-danger-hover); }

.vx-spinner {
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: vx-spin 600ms linear infinite;
  display: inline-block;
}

/* ---------- FORM ---------- */
.vx-form { display: flex; flex-direction: column; gap: 14px; }
.vx-field { display: flex; flex-direction: column; gap: 5px; }
.vx-label {
  font-size: 13px; font-weight: 500; color: var(--vx-text-2);
  display: inline-flex; gap: 4px;
}
.vx-label .vx-req { color: var(--vx-danger); }
.vx-hint { font-size: 12px; color: var(--vx-text-muted); }
.vx-error { font-size: 12px; color: var(--vx-danger); margin-top: 2px; }

.vx-input, .vx-textarea, .vx-select {
  background: var(--vx-bg);
  color: var(--vx-text);
  border: 1px solid var(--vx-border);
  border-radius: var(--vx-radius-sm);
  padding: 9px 12px;
  font-size: 14px;
  font-family: inherit;
  width: 100%;
  box-sizing: border-box;
  transition: border-color 120ms, box-shadow 120ms;
}
.vx-input:focus, .vx-textarea:focus, .vx-select:focus {
  outline: none;
  border-color: var(--vx-primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,.18);
}
.vx-input.vx-invalid, .vx-textarea.vx-invalid, .vx-select.vx-invalid { border-color: var(--vx-danger); }
.vx-textarea { resize: vertical; min-height: 80px; }

.vx-input::placeholder, .vx-textarea::placeholder { color: var(--vx-text-muted); }

/* Password */
.vx-password-wrap { position: relative; }
.vx-password-toggle {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  background: transparent; border: 0; color: var(--vx-text-muted);
  cursor: pointer; padding: 4px 8px; border-radius: 4px;
}
.vx-password-toggle:hover { color: var(--vx-text); background: var(--vx-card-2); }

/* Checkbox / switch */
.vx-checkbox-wrap, .vx-switch-wrap {
  display: inline-flex; align-items: center; gap: 10px; cursor: pointer; user-select: none;
}
.vx-checkbox-wrap input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--vx-primary); }

.vx-switch {
  position: relative; width: 36px; height: 20px;
  background: var(--vx-border); border-radius: 999px;
  transition: background 140ms;
  flex-shrink: 0;
}
.vx-switch::after {
  content: ""; position: absolute; top: 2px; left: 2px;
  width: 16px; height: 16px; background: #fff; border-radius: 50%;
  transition: transform 140ms;
}
.vx-switch-wrap input { display: none; }
.vx-switch-wrap input:checked + .vx-switch { background: var(--vx-primary); }
.vx-switch-wrap input:checked + .vx-switch::after { transform: translateX(16px); }

/* Radio group */
.vx-radio-group { display: flex; flex-direction: column; gap: 6px; }
.vx-radio-item { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; padding: 4px; }
.vx-radio-item input { accent-color: var(--vx-primary); }

/* Combobox / autocomplete */
.vx-combo-wrap { position: relative; }
.vx-combo-list {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--vx-card);
  border: 1px solid var(--vx-border);
  border-radius: var(--vx-radius-sm);
  margin-top: 4px;
  max-height: 220px;
  overflow-y: auto;
  z-index: 10;
  box-shadow: 0 10px 25px rgba(0,0,0,.4);
}
.vx-combo-item {
  padding: 8px 12px; cursor: pointer; color: var(--vx-text-2);
  display: flex; align-items: center; gap: 8px;
}
.vx-combo-item:hover, .vx-combo-item.vx-active { background: var(--vx-card-2); color: var(--vx-text); }
.vx-combo-empty { padding: 10px 12px; color: var(--vx-text-muted); font-size: 13px; }

/* Multiselect chips */
.vx-multi-wrap {
  border: 1px solid var(--vx-border);
  border-radius: var(--vx-radius-sm);
  background: var(--vx-bg);
  padding: 6px;
  display: flex; flex-wrap: wrap; gap: 5px; align-items: center;
  min-height: 38px;
  cursor: text;
}
.vx-multi-wrap.vx-focus { border-color: var(--vx-primary); box-shadow: 0 0 0 3px rgba(59,130,246,.18); }
.vx-chip {
  background: var(--vx-primary); color: #fff;
  padding: 3px 8px; border-radius: 4px;
  font-size: 12px; display: inline-flex; align-items: center; gap: 6px;
}
.vx-chip-x { cursor: pointer; opacity: .8; }
.vx-chip-x:hover { opacity: 1; }
.vx-multi-input {
  flex: 1; min-width: 80px; background: transparent; border: 0; color: var(--vx-text);
  outline: none; padding: 4px;
}

/* File */
.vx-file-wrap { display: flex; flex-direction: column; gap: 6px; }
.vx-file-input { display: none; }
.vx-file-label {
  border: 1px dashed var(--vx-border-strong);
  border-radius: var(--vx-radius-sm);
  padding: 14px; text-align: center; cursor: pointer; color: var(--vx-text-muted);
  transition: border-color 120ms, color 120ms;
}
.vx-file-label:hover { border-color: var(--vx-primary); color: var(--vx-text); }
.vx-file-name { font-size: 13px; color: var(--vx-text-2); }

/* Banner inline error */
.vx-banner {
  padding: 10px 14px;
  border-radius: var(--vx-radius-sm);
  margin-bottom: 12px;
  font-size: 13px;
  display: flex; align-items: center; gap: 8px;
}
.vx-banner.vx-banner-error {
  background: rgba(239,68,68,.12);
  color: #fecaca;
  border: 1px solid rgba(239,68,68,.4);
}
.vx-banner.vx-banner-warn {
  background: rgba(245,158,11,.12);
  color: #fde68a;
  border: 1px solid rgba(245,158,11,.4);
}

/* ---------- TOAST ---------- */
.vx-toast-stack {
  position: fixed; top: 16px; right: 16px;
  display: flex; flex-direction: column; gap: 10px;
  z-index: var(--vx-z-toast);
  pointer-events: none;
  max-width: 360px;
}
.vx-toast {
  pointer-events: auto;
  background: var(--vx-card);
  color: var(--vx-text);
  border: 1px solid var(--vx-border);
  border-left: 4px solid var(--vx-info);
  border-radius: var(--vx-radius-sm);
  padding: 12px 14px;
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13px;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
  animation: vx-toast-in 180ms ease-out;
  cursor: pointer;
  min-width: 240px;
}
.vx-toast.vx-closing { animation: vx-toast-out 160ms ease-in forwards; }
.vx-toast.vx-success { border-left-color: var(--vx-success); }
.vx-toast.vx-error   { border-left-color: var(--vx-danger); }
.vx-toast.vx-warn    { border-left-color: var(--vx-warn); }
.vx-toast.vx-info    { border-left-color: var(--vx-info); }
.vx-toast-icon {
  font-weight: 700; font-size: 14px; line-height: 1.2;
  width: 20px; height: 20px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
  color: #fff;
}
.vx-toast.vx-success .vx-toast-icon { background: var(--vx-success); }
.vx-toast.vx-error   .vx-toast-icon { background: var(--vx-danger); }
.vx-toast.vx-warn    .vx-toast-icon { background: var(--vx-warn); }
.vx-toast.vx-info    .vx-toast-icon { background: var(--vx-info); }
.vx-toast-msg { flex: 1; line-height: 1.4; }

/* ---------- LOADING OVERLAY ---------- */
.vx-loading-overlay {
  position: fixed; inset: 0;
  background: rgba(2,6,23,.7);
  backdrop-filter: blur(3px);
  z-index: var(--vx-z-loading);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 14px;
  animation: vx-fade-in 140ms ease-out;
}
.vx-loading-spinner {
  width: 38px; height: 38px;
  border: 3px solid rgba(255,255,255,.18);
  border-top-color: var(--vx-primary);
  border-radius: 50%;
  animation: vx-spin 700ms linear infinite;
}
.vx-loading-msg { color: var(--vx-text-2); font-size: 14px; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }

/* ---------- ANIMATIONS ---------- */
@keyframes vx-fade-in  { from { opacity: 0; } to { opacity: 1; } }
@keyframes vx-fade-out { from { opacity: 1; } to { opacity: 0; } }
@keyframes vx-slide-up {
  from { opacity: 0; transform: translateY(14px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes vx-slide-down {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(8px) scale(.98); }
}
@keyframes vx-spin { to { transform: rotate(360deg); } }
@keyframes vx-toast-in  { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes vx-toast-out { from { opacity: 1; transform: translateX(0); }   to { opacity: 0; transform: translateX(20px); } }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 640px) {
  .vx-backdrop { padding: 0; }
  .vx-modal {
    max-width: 100% !important;
    height: 100vh; max-height: 100vh;
    border-radius: 0;
    border: 0;
  }
  .vx-modal-footer { border-radius: 0; }
  .vx-toast-stack { left: 8px; right: 8px; max-width: none; top: 8px; }
}