/* ============================================================
   QUANTO PAGUEI - Sistema de Temas (Dark / Light)
   ============================================================ */

:root {
  /* Tema Claro (padrão) */
  --bg-primary: #f4f7fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e8edf5;
  --bg-header: linear-gradient(135deg, #1976d2, #0d47a1);
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --bg-nav: #ffffff;
  --bg-badge: #e3f2fd;
  --bg-alert-info: #e3f2fd;
  --bg-alert-success: #e8f5e9;
  --bg-alert-warning: #fff3e0;
  --bg-alert-danger: #ffebee;
  --bg-landing: linear-gradient(180deg, #e3f2fd 0%, #f4f7fb 100%);
  --bg-auth: linear-gradient(180deg, #e3f2fd 0%, #ffffff 100%);
  --bg-sidebar: #1e293b;
  --bg-topbar: #ffffff;
  --bg-table-head: #f8fafc;
  --bg-table-row: #ffffff;
  --bg-table-row-hover: #f1f5f9;
  --bg-modal: #ffffff;
  --bg-offer: #ffffff;

  --text-primary: #1a1a2e;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #ffffff;
  --text-link: #1976d2;
  --text-sidebar: #cbd5e1;
  --text-sidebar-active: #ffffff;

  --border-color: #e2e8f0;
  --border-input: #cbd5e1;
  --border-card: transparent;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);

  --color-primary: #1976d2;
  --color-primary-hover: #1565c0;
  --color-success: #2e7d32;
  --color-warning: #f57c00;
  --color-danger: #c62828;
  --color-info: #0288d1;

  --toggle-bg: #e2e8f0;
  --toggle-knob: #ffffff;
  --toggle-icon-sun: #f57c00;
  --toggle-icon-moon: #1976d2;
}

/* Tema Escuro */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-header: linear-gradient(135deg, #1e293b, #0f172a);
  --bg-card: #1e293b;
  --bg-input: #334155;
  --bg-nav: #1e293b;
  --bg-badge: #1e3a5f;
  --bg-alert-info: #1e3a5f;
  --bg-alert-success: #1e3a2e;
  --bg-alert-warning: #3d2e1e;
  --bg-alert-danger: #3d1e1e;
  --bg-landing: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  --bg-auth: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  --bg-sidebar: #0f172a;
  --bg-topbar: #1e293b;
  --bg-table-head: #334155;
  --bg-table-row: #1e293b;
  --bg-table-row-hover: #334155;
  --bg-modal: #1e293b;
  --bg-offer: #1e293b;

  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --text-inverse: #0f172a;
  --text-link: #60a5fa;
  --text-sidebar: #94a3b8;
  --text-sidebar-active: #f1f5f9;

  --border-color: #334155;
  --border-input: #475569;
  --border-card: #334155;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.5);

  --color-primary: #60a5fa;
  --color-primary-hover: #3b82f6;
  --color-success: #4ade80;
  --color-warning: #fb923c;
  --color-danger: #f87171;
  --color-info: #38bdf8;

  --toggle-bg: #334155;
  --toggle-knob: #1e293b;
  --toggle-icon-sun: #fbbf24;
  --toggle-icon-moon: #818cf8;
}

/* ============================================================
   APLICAÇÃO GLOBAL DOS TEMAS
   ============================================================ */

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: background 0.3s ease, color 0.3s ease;
}

/* Header principal */
.qp-header {
  background: var(--bg-header);
  transition: background 0.3s ease;
}

.qp-logo {
  color: var(--text-inverse);
}

/* Cards */
.qp-card,
.card {
  background: var(--bg-card);
  border-color: var(--border-card);
  box-shadow: var(--shadow-md);
  color: var(--text-primary);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.card-header {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-bottom-color: var(--border-color);
}

.card-body {
  color: var(--text-primary);
}

.card-footer {
  background: var(--bg-card);
  border-top-color: var(--border-color);
}

/* Inputs */
.form-control,
.form-select {
  background: var(--bg-input);
  border-color: var(--border-input);
  color: var(--text-primary);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.form-control:focus,
.form-select:focus {
  background: var(--bg-input);
  border-color: var(--color-primary);
  color: var(--text-primary);
  box-shadow: 0 0 0 0.2rem rgba(25, 118, 210, 0.15);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-label {
  color: var(--text-secondary);
}

.form-text,
small.text-muted {
  color: var(--text-muted) !important;
}

/* Botões */
.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.btn-outline-primary {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline-primary:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-outline-secondary {
  color: var(--text-secondary);
  border-color: var(--border-input);
}

.btn-outline-secondary:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-link {
  color: var(--text-link);
}

/* Navegação inferior (mobile) */
.qp-bottom-nav {
  background: var(--bg-nav);
  border-top-color: var(--border-color);
  box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.qp-nav-item {
  color: var(--text-muted);
}

.qp-nav-item.active {
  color: var(--color-primary);
}

/* Greeting card */
.qp-greeting {
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.qp-greeting h4 {
  color: var(--text-primary);
}

/* Stats */
.qp-stat {
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  color: var(--text-primary);
}

.qp-stat small {
  color: var(--text-muted);
}

/* Ofertas */
.qp-offer {
  background: var(--bg-offer);
  box-shadow: var(--shadow-md);
}

.qp-offer .card-title {
  color: var(--text-primary);
}

/* List group */
.list-group-item {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.list-group-item-action:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Alerts */
.alert-info {
  background: var(--bg-alert-info);
  color: var(--color-info);
  border-color: var(--color-info);
}

.alert-success {
  background: var(--bg-alert-success);
  color: var(--color-success);
  border-color: var(--color-success);
}

.alert-warning {
  background: var(--bg-alert-warning);
  color: var(--color-warning);
  border-color: var(--color-warning);
}

.alert-danger {
  background: var(--bg-alert-danger);
  color: var(--color-danger);
  border-color: var(--color-danger);
}

/* Tables */
.table {
  color: var(--text-primary);
}

.table thead th {
  background: var(--bg-table-head);
  color: var(--text-secondary);
  border-bottom-color: var(--border-color);
}

.table tbody tr {
  background: var(--bg-table-row);
}

.table tbody tr:hover {
  background: var(--bg-table-row-hover);
}

.table td,
.table th {
  border-color: var(--border-color);
}

/* Badges */
.badge {
  color: #fff;
}

/* Landing page */
.qp-landing {
  background: var(--bg-landing);
}

.qp-auth-bg {
  background: var(--bg-auth);
}

/* Sidebar admin */
.qp-sidebar {
  background: var(--bg-sidebar);
}

.qp-sidebar-nav a {
  color: var(--text-sidebar);
}

.qp-sidebar-nav a:hover,
.qp-sidebar-nav a.active {
  background: var(--bg-tertiary);
  color: var(--text-sidebar-active);
}

/* Topbar admin */
.qp-admin-topbar {
  background: var(--bg-topbar);
  border-bottom-color: var(--border-color);
  color: var(--text-primary);
}

.qp-admin-content {
  color: var(--text-primary);
}

.qp-stat-card {
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  color: var(--text-primary);
}

.qp-stat-card small {
  color: var(--text-muted);
}

/* Nav tabs/pills */
.nav-tabs .nav-link {
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.nav-tabs .nav-link.active {
  background: var(--bg-card);
  color: var(--color-primary);
  border-color: var(--border-color);
}

.nav-pills .nav-link {
  color: var(--text-secondary);
}

.nav-pills .nav-link.active {
  background: var(--color-primary);
  color: #fff;
}

/* Modal */
.modal-content {
  background: var(--bg-modal);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.modal-header {
  border-bottom-color: var(--border-color);
}

.modal-footer {
  border-top-color: var(--border-color);
}

/* Links */
a {
  color: var(--text-link);
}

a:hover {
  color: var(--color-primary-hover);
}

/* Code */
code {
  background: var(--bg-tertiary);
  color: var(--color-primary);
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  font-size: 0.85em;
}

/* Scrollbar (webkit) */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ============================================================
   TOGGLE DIA/NOITE
   ============================================================ */

.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
}

.theme-toggle-btn {
  width: 56px;
  height: 30px;
  background: var(--toggle-bg);
  border-radius: 15px;
  position: relative;
  transition: background 0.3s ease;
  border: 2px solid var(--border-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px;
}

.theme-toggle-btn .icon-sun,
.theme-toggle-btn .icon-moon {
  font-size: 14px;
  z-index: 1;
  transition: opacity 0.3s ease;
}

.theme-toggle-btn .icon-sun {
  color: var(--toggle-icon-sun);
  opacity: 0.5;
}

.theme-toggle-btn .icon-moon {
  color: var(--toggle-icon-moon);
  opacity: 0.5;
}

[data-theme="dark"] .theme-toggle-btn .icon-sun {
  opacity: 0.5;
}

[data-theme="dark"] .theme-toggle-btn .icon-moon {
  opacity: 1;
}

[data-theme="light"] .theme-toggle-btn .icon-sun {
  opacity: 1;
}

[data-theme="light"] .theme-toggle-btn .icon-moon {
  opacity: 0.5;
}

.theme-toggle-knob {
  width: 22px;
  height: 22px;
  background: var(--toggle-knob);
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform 0.3s ease, background 0.3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

[data-theme="dark"] .theme-toggle-knob {
  transform: translateX(26px);
}

.theme-toggle-knob i {
  font-size: 12px;
  color: var(--text-muted);
}

/* Toggle no header do usuário */
.header-theme-toggle {
  display: flex;
  align-items: center;
}

.header-theme-toggle .theme-toggle-btn {
  width: 48px;
  height: 26px;
}

.header-theme-toggle .theme-toggle-knob {
  width: 18px;
  height: 18px;
}

[data-theme="dark"] .header-theme-toggle .theme-toggle-knob {
  transform: translateX(22px);
}

/* Toggle na landing page */
.landing-theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1050;
  background: var(--bg-card);
  border-radius: 25px;
  padding: 0.4rem 0.8rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--border-color);
}

.landing-theme-toggle .theme-toggle-btn {
  width: 48px;
  height: 26px;
}

.landing-theme-toggle .theme-toggle-knob {
  width: 18px;
  height: 18px;
}

[data-theme="dark"] .landing-theme-toggle .theme-toggle-knob {
  transform: translateX(22px);
}

.landing-theme-toggle span {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Toggle no admin */
.admin-theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.admin-theme-toggle span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   ANIMAÇÃO DE TRANSIÇÃO
   ============================================================ */

.theme-transitioning,
.theme-transitioning * {
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease !important;
}

/* ============================================================
   RESPONSIVO
   ============================================================ */

@media (max-width: 576px) {
  .landing-theme-toggle {
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.3rem 0.6rem;
  }

  .landing-theme-toggle span {
    display: none;
  }

  .header-theme-toggle .theme-toggle-btn {
    width: 44px;
    height: 24px;
  }

  .header-theme-toggle .theme-toggle-knob {
    width: 16px;
    height: 16px;
  }

  [data-theme="dark"] .header-theme-toggle .theme-toggle-knob {
    transform: translateX(20px);
  }
}