/* ========================================
   DENTAL ULTRA - UI COMPONENTS v1.0
   Sistema de Gestão Odontológica
   ======================================== */

/* ===== BASE RESET ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--du-font);
  font-size: var(--du-body);
  background: var(--du-bg);
  color: var(--du-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ===== LAYOUT HELPERS ===== */
.du-container { width: min(1200px, 94%); margin: 0 auto; }
.du-stack { display: flex; flex-direction: column; gap: var(--du-4); }
.du-row { display: flex; gap: var(--du-3); align-items: center; }
.du-row--between { justify-content: space-between; }
.du-grid { display: grid; gap: var(--du-4); }
.du-grid-2 { grid-template-columns: repeat(2, 1fr); }
.du-grid-3 { grid-template-columns: repeat(3, 1fr); }
.du-grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { 
  .du-grid-2, .du-grid-3, .du-grid-4 { grid-template-columns: 1fr; } 
}

/* ===== TYPOGRAPHY ===== */
.du-h1 { font-size: var(--du-h1); font-weight: 800; letter-spacing: -0.02em; line-height: 1.05; margin: 0; }
.du-h2 { font-size: var(--du-h2); font-weight: 700; letter-spacing: -0.01em; line-height: 1.1; margin: 0; }
.du-h3 { font-size: var(--du-h3); font-weight: 600; line-height: 1.2; margin: 0; }
.du-h4 { font-size: var(--du-h4); font-weight: 600; line-height: 1.3; margin: 0; }
.du-body { font-size: var(--du-body); line-height: 1.6; }
.du-small { font-size: var(--du-small); line-height: 1.5; }
.du-xs { font-size: var(--du-xs); line-height: 1.4; }
.du-muted { color: var(--du-text-2); }

a { color: var(--du-primary); text-decoration: none; transition: color var(--du-duration) var(--du-ease); }
a:hover { text-decoration: underline; }

/* ===== CARD ===== */
.du-card {
  background: var(--du-surface);
  border: 1px solid var(--du-border);
  border-radius: var(--du-r-lg);
  box-shadow: var(--du-sh-sm);
  padding: var(--du-5);
}
.du-card--soft { background: var(--du-surface-2); }
.du-card--elevated { box-shadow: var(--du-sh-md); }
.du-card--glow { box-shadow: var(--du-sh-glow); border-color: var(--du-primary); }

.du-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--du-4);
  margin-bottom: var(--du-4);
  border-bottom: 1px solid var(--du-border);
}
.du-card__title { font-size: var(--du-h4); font-weight: 700; margin: 0; }

/* ===== BUTTONS ===== */
.du-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--du-r-md);
  padding: 12px 20px;
  font-family: var(--du-font);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  transition: all var(--du-duration) var(--du-ease);
}
.du-btn:focus { outline: none; box-shadow: var(--du-focus); }
.du-btn:active { transform: translateY(1px); }
.du-btn[disabled], .du-btn.is-loading { opacity: .6; cursor: not-allowed; pointer-events: none; }

/* Primary */
.du-btn--primary { background: var(--du-primary); color: #fff; }
.du-btn--primary:hover { background: var(--du-primary-hover); box-shadow: var(--du-sh-glow); }

/* Secondary */
.du-btn--secondary { background: var(--du-primary-dark); color: #fff; }
.du-btn--secondary:hover { filter: brightness(1.1); }

/* Outline */
.du-btn--outline { background: transparent; color: var(--du-primary); border-color: var(--du-primary); }
.du-btn--outline:hover { background: rgba(31,162,255,.08); }

/* Ghost */
.du-btn--ghost { background: transparent; color: var(--du-primary); }
.du-btn--ghost:hover { background: rgba(31,162,255,.08); }

/* Success */
.du-btn--success { background: var(--du-success); color: #fff; }
.du-btn--success:hover { filter: brightness(.95); }

/* Error / Danger */
.du-btn--error, .du-btn--danger { background: var(--du-error); color: #fff; }
.du-btn--error:hover, .du-btn--danger:hover { filter: brightness(.95); }

/* Warning */
.du-btn--warning { background: var(--du-warning); color: #fff; }
.du-btn--warning:hover { filter: brightness(.95); }

/* Sizes */
.du-btn--sm { padding: 8px 14px; font-size: 13px; }
.du-btn--lg { padding: 16px 28px; font-size: 17px; }
.du-btn--block { width: 100%; }

/* Loading spinner */
.du-spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: du-spin .7s linear infinite;
}
.du-btn--outline .du-spinner, .du-btn--ghost .du-spinner {
  border-color: rgba(31,162,255,.3);
  border-top-color: var(--du-primary);
}
@keyframes du-spin { to { transform: rotate(360deg); } }

/* ===== INPUTS ===== */
.du-field { display: grid; gap: 6px; }
.du-label { font-size: var(--du-small); font-weight: 600; color: var(--du-text); }
.du-label .required { color: var(--du-error); margin-left: 2px; }

.du-input, .du-select, .du-textarea {
  width: 100%;
  border: 1px solid var(--du-border);
  border-radius: var(--du-r-md);
  padding: 12px 14px;
  background: var(--du-surface);
  color: var(--du-text);
  font-family: var(--du-font);
  font-size: 15px;
  transition: border-color var(--du-duration) var(--du-ease), box-shadow var(--du-duration) var(--du-ease);
}
.du-input::placeholder, .du-textarea::placeholder { color: var(--du-text-muted); }
.du-textarea { min-height: 100px; resize: vertical; }
.du-select { cursor: pointer; }

.du-input:focus, .du-select:focus, .du-textarea:focus {
  outline: none;
  border-color: var(--du-border-focus);
  box-shadow: var(--du-focus);
}

.du-help { font-size: var(--du-xs); color: var(--du-text-2); }
.du-error-msg { font-size: var(--du-xs); color: var(--du-error); display: none; }

/* Error state */
.du-field.is-error .du-input,
.du-field.is-error .du-select,
.du-field.is-error .du-textarea {
  border-color: var(--du-error);
  box-shadow: var(--du-focus-error);
}
.du-field.is-error .du-error-msg { display: block; }

/* ===== CHECKBOX / RADIO ===== */
.du-check { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; }
.du-check input { 
  margin-top: 3px; 
  accent-color: var(--du-primary); 
  width: 16px; 
  height: 16px; 
}
.du-check span { font-size: var(--du-small); }

/* ===== SWITCH ===== */
.du-switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; }
.du-switch input { display: none; }
.du-switch__track {
  width: 44px; height: 24px;
  background: rgba(107,114,128,.35);
  border-radius: var(--du-r-full);
  position: relative;
  transition: background var(--du-duration) var(--du-ease);
}
.du-switch__thumb {
  width: 20px; height: 20px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 2px; left: 2px;
  box-shadow: var(--du-sh-sm);
  transition: transform var(--du-duration) var(--du-ease);
}
.du-switch input:checked + .du-switch__track { background: var(--du-primary); }
.du-switch input:checked + .du-switch__track .du-switch__thumb { transform: translateX(20px); }

/* ===== NAVBAR ===== */
.du-nav {
  background: var(--du-primary-dark);
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.du-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.du-nav a { color: rgba(255,255,255,.9); }
.du-nav a:hover { color: #fff; text-decoration: none; }
.du-nav__brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 18px; }
.du-nav__brand img { height: 36px; width: auto; border-radius: var(--du-r-sm); }
.du-nav__menu { display: flex; gap: 20px; align-items: center; }
@media (max-width: 768px) { .du-nav__menu { display: none; } }

/* ===== SIDEBAR ===== */
.du-sidebar {
  width: 240px;
  background: var(--du-surface);
  border-right: 1px solid var(--du-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 100;
}
.du-sidebar__logo {
  padding: var(--du-5);
  border-bottom: 1px solid var(--du-border);
  display: flex;
  align-items: center;
  gap: 12px;
}
.du-sidebar__logo img { width: 40px; height: 40px; border-radius: var(--du-r-sm); }
.du-sidebar__logo span { font-weight: 700; font-size: 18px; color: var(--du-primary-dark); }

.du-sidebar__nav { flex: 1; padding: var(--du-4) 0; overflow-y: auto; }
.du-sidebar__nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px var(--du-5);
  color: var(--du-text-2);
  font-size: var(--du-small);
  border-left: 3px solid transparent;
  transition: all var(--du-duration) var(--du-ease);
}
.du-sidebar__nav a:hover {
  background: var(--du-surface-2);
  color: var(--du-text);
  text-decoration: none;
}
.du-sidebar__nav a.active {
  background: rgba(31,162,255,.08);
  color: var(--du-primary);
  border-left-color: var(--du-primary);
  font-weight: 600;
}
.du-sidebar__nav a .icon { font-size: 18px; }

.du-sidebar__user {
  padding: var(--du-4);
  border-top: 1px solid var(--du-border);
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Main content with sidebar */
.du-main { margin-left: 240px; padding: var(--du-5); min-height: 100vh; background: var(--du-surface-2); }
@media (max-width: 900px) {
  .du-sidebar { display: none; }
  .du-main { margin-left: 0; }
}

/* ===== MODAL ===== */
.du-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--du-5);
  background: rgba(10,20,36,.65);
  backdrop-filter: blur(4px);
  z-index: 9999;
}
.du-modal.is-open { display: flex; }

.du-modal__panel {
  width: min(560px, 100%);
  max-height: 90vh;
  background: var(--du-surface);
  border: 1px solid var(--du-border);
  border-radius: var(--du-r-xl);
  box-shadow: var(--du-sh-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.du-modal__panel--lg { width: min(800px, 100%); }
.du-modal__panel--sm { width: min(400px, 100%); }

.du-modal__head {
  padding: var(--du-4) var(--du-5);
  border-bottom: 1px solid var(--du-border);
  background: var(--du-surface-2);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.du-modal__title { font-size: var(--du-h4); font-weight: 700; margin: 0; }
.du-modal__close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--du-text-2);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}
.du-modal__close:hover { color: var(--du-text); }

.du-modal__body { padding: var(--du-5); overflow-y: auto; flex: 1; }

.du-modal__foot {
  padding: var(--du-4) var(--du-5);
  border-top: 1px solid var(--du-border);
  background: var(--du-surface-2);
  display: flex;
  gap: var(--du-3);
  justify-content: flex-end;
}

/* ===== TOASTS ===== */
.du-toasts {
  position: fixed;
  top: var(--du-4);
  right: var(--du-4);
  display: flex;
  flex-direction: column;
  gap: var(--du-3);
  z-index: 99999;
  pointer-events: none;
}
.du-toast {
  width: min(380px, calc(100vw - 32px));
  background: var(--du-surface);
  border: 1px solid var(--du-border);
  border-left: 4px solid var(--du-info);
  border-radius: var(--du-r-lg);
  box-shadow: var(--du-sh-md);
  padding: var(--du-4);
  pointer-events: auto;
  cursor: pointer;
  animation: du-toast-in .3s var(--du-ease);
}
@keyframes du-toast-in {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}
.du-toast__title { font-weight: 700; font-size: var(--du-small); margin-bottom: 4px; }
.du-toast__msg { color: var(--du-text-2); font-size: var(--du-small); line-height: 1.4; }

.du-toast--success { border-left-color: var(--du-success); }
.du-toast--warning { border-left-color: var(--du-warning); }
.du-toast--error { border-left-color: var(--du-error); }

/* ===== BADGE ===== */
.du-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 8px;
  font-size: var(--du-xs);
  font-weight: 700;
  border-radius: var(--du-r-full);
  background: var(--du-primary);
  color: #fff;
}
.du-badge--success { background: var(--du-success); }
.du-badge--warning { background: var(--du-warning); }
.du-badge--error { background: var(--du-error); }
.du-badge--outline { background: transparent; color: var(--du-primary); border: 1px solid var(--du-primary); }

/* ===== AVATAR ===== */
.du-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--du-surface-2);
  border: 2px solid var(--du-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  font-weight: 600;
  color: var(--du-text-2);
}
.du-avatar img { width: 100%; height: 100%; object-fit: cover; }
.du-avatar--sm { width: 32px; height: 32px; font-size: var(--du-xs); }
.du-avatar--lg { width: 56px; height: 56px; }
.du-avatar--xl { width: 80px; height: 80px; font-size: var(--du-h4); }

/* ===== ALERT ===== */
.du-alert {
  padding: var(--du-4);
  border-radius: var(--du-r-md);
  border: 1px solid var(--du-border);
  background: var(--du-surface-2);
  display: flex;
  gap: var(--du-3);
  align-items: flex-start;
}
.du-alert--info { border-left: 4px solid var(--du-info); }
.du-alert--success { border-left: 4px solid var(--du-success); }
.du-alert--warning { border-left: 4px solid var(--du-warning); }
.du-alert--error { border-left: 4px solid var(--du-error); }

/* ===== DIVIDER ===== */
.du-divider { height: 1px; background: var(--du-border); margin: var(--du-4) 0; }

/* ===== TABLE ===== */
.du-table { width: 100%; border-collapse: collapse; }
.du-table th, .du-table td {
  padding: var(--du-3) var(--du-4);
  text-align: left;
  border-bottom: 1px solid var(--du-border);
}
.du-table th { 
  font-size: var(--du-small); 
  font-weight: 600; 
  color: var(--du-text-2);
  background: var(--du-surface-2);
}
.du-table tbody tr:hover { background: var(--du-surface-2); }

/* ===== UTILITIES ===== */
.du-text-center { text-align: center; }
.du-text-right { text-align: right; }
.du-text-primary { color: var(--du-primary); }
.du-text-success { color: var(--du-success); }
.du-text-error { color: var(--du-error); }
.du-text-warning { color: var(--du-warning); }

.du-mt-1 { margin-top: var(--du-1); }
.du-mt-2 { margin-top: var(--du-2); }
.du-mt-3 { margin-top: var(--du-3); }
.du-mt-4 { margin-top: var(--du-4); }
.du-mt-5 { margin-top: var(--du-5); }
.du-mb-1 { margin-bottom: var(--du-1); }
.du-mb-2 { margin-bottom: var(--du-2); }
.du-mb-3 { margin-bottom: var(--du-3); }
.du-mb-4 { margin-bottom: var(--du-4); }
.du-mb-5 { margin-bottom: var(--du-5); }

.du-p-3 { padding: var(--du-3); }
.du-p-4 { padding: var(--du-4); }
.du-p-5 { padding: var(--du-5); }

.du-hidden { display: none !important; }
.du-flex { display: flex; }
.du-flex-1 { flex: 1; }
.du-items-center { align-items: center; }
.du-justify-center { justify-content: center; }
.du-justify-between { justify-content: space-between; }
.du-gap-2 { gap: var(--du-2); }
.du-gap-3 { gap: var(--du-3); }
.du-gap-4 { gap: var(--du-4); }
.du-w-full { width: 100%; }