/* ========================================
   finance-flow — Tokens do Design System
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Superfícies */
  --surface-base: #0B1120;
  --surface-sidebar: #0D1529;
  --surface-card: #111B2E;
  --surface-card-hover: #162035;
  --surface-elevated: #1A2540;
  --surface-input: #0D1529;

  /* Bordas */
  --border-default: #1E2D4A;
  --border-subtle: #162035;
  --border-focus: #6C63FF;

  /* Texto */
  --text-primary: #FFFFFF;
  --text-secondary: #8899B4;
  --text-tertiary: #556685;
  --text-inverse: #0B1120;

  /* Cores de Destaque */
  --accent-primary: #6C63FF;
  --accent-primary-hover: #7B73FF;
  --accent-cyan: #00D4FF;
  --accent-purple: #A855F7;
  --accent-pink: #EC4899;

  /* Status — Específico para Finanças */
  --color-income: #4ADE80;
  --color-income-bg: rgba(34, 197, 94, 0.15);
  --color-expense: #F87171;
  --color-expense-bg: rgba(248, 113, 113, 0.15);
  --color-warning: #FBBF24;
  --color-warning-bg: rgba(251, 191, 36, 0.15);

  /* Cores das Categorias */
  --cat-food: #F97316;
  --cat-transport: #3B82F6;
  --cat-housing: #A855F7;
  --cat-health: #EC4899;
  --cat-leisure: #00D4FF;
  --cat-education: #6C63FF;
  --cat-others: #8899B4;
  --cat-salary: #22C55E;
  --cat-freelance: #14B8A6;
  --cat-investments: #FBBF24;

  /* Tipografia */
  --font-primary: 'Inter', sans-serif;
  --text-xs: 0.6875rem;
  --text-sm: 0.75rem;
  --text-base: 0.875rem;
  --text-md: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --leading-tight: 1.2;
  --leading-normal: 1.5;

  /* Espaçamento */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Bordas Arredondadas */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Sombras */
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow-primary: 0 0 20px rgba(108, 99, 255, 0.2);
  --shadow-glow-cyan: 0 0 20px rgba(0, 212, 255, 0.15);

  /* Animações (Motion) */
  --duration-fast: 100ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --duration-slower: 500ms;
  --easing-default: cubic-bezier(0.4, 0, 0.2, 1);
  --easing-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-Index */
  --z-base: 0;
  --z-card: 1;
  --z-sidebar: 10;
  --z-header: 20;
  --z-dropdown: 30;
  --z-modal: 40;
  --z-toast: 50;
}

/* ========================================
   SOBREPOSIÇÕES DO TEMA CLARO
   ======================================== */
[data-theme="light"] {
  --surface-base: #F0F2F5;
  --surface-sidebar: #FFFFFF;
  --surface-card: #FFFFFF;
  --surface-card-hover: #F8F9FB;
  --surface-elevated: #FFFFFF;
  --surface-input: #F0F2F5;
  --border-default: #E2E8F0;
  --border-subtle: #EDF2F7;
  --text-primary: #0F172A;
  --text-secondary: #64748B;
  --text-tertiary: #94A3B8;
  --text-inverse: #FFFFFF;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.15);
}

/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-primary);
  background: var(--surface-base);
  color: var(--text-primary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  min-height: 100vh;
  transition: background var(--duration-slow) var(--easing-default),
              color var(--duration-slow) var(--easing-default);
}

/* ========================================
   HEADER
   ======================================== */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: var(--surface-sidebar);
  border-bottom: 1px solid var(--border-default);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
}

.app-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.app-header__logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
}

.app-header__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
}

.app-header__subtitle {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.app-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ========================================
   ABAS DE NAVEGAÇÃO
   ======================================== */
.nav-tabs {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--surface-sidebar);
  border-bottom: 1px solid var(--border-default);
  overflow-x: auto;
}

.nav-tab {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: all var(--duration-base) var(--easing-default);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-tab:hover { color: var(--text-primary); background: rgba(108, 99, 255, 0.08); }
.nav-tab--active { color: var(--text-primary); background: var(--accent-primary); }

/* ========================================
   CONTEÚDO PRINCIPAL
   ======================================== */
.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-6);
}

.tab-panel { display: none; animation: fadeIn var(--duration-slow) var(--easing-default); }
.tab-panel--active { display: block; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ========================================
   CARDS DE RESUMO
   ======================================== */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.summary-card {
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  transition: all var(--duration-base) var(--easing-default);
  position: relative;
  overflow: hidden;
}

.summary-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.summary-card--balance::before { background: linear-gradient(90deg, var(--accent-primary), var(--accent-cyan)); }
.summary-card--income::before { background: linear-gradient(90deg, #22C55E, #4ADE80); }
.summary-card--expense::before { background: linear-gradient(90deg, #EF4444, #F87171); }

.summary-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.summary-card__label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.summary-card__value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
}

.summary-card--income .summary-card__value { color: var(--color-income); }
.summary-card--expense .summary-card__value { color: var(--color-expense); }

/* ========================================
   GRÁFICOS
   ======================================== */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.chart-card {
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
}

.chart-card__title {
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.chart-wrapper { position: relative; width: 100%; max-height: 300px; }

/* ========================================
   BOTÕES
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--duration-base) var(--easing-default);
}

.btn--primary {
  background: var(--accent-primary);
  color: #fff;
}
.btn--primary:hover { background: var(--accent-primary-hover); box-shadow: var(--shadow-glow-primary); }

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-default);
}
.btn--ghost:hover { color: var(--text-primary); background: rgba(108, 99, 255, 0.08); }

.btn--danger {
  background: transparent;
  color: var(--color-expense);
  border-color: transparent;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-sm);
}
.btn--danger:hover { background: var(--color-expense-bg); }

.btn--icon {
  width: 36px;
  height: 36px;
  padding: 0;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  font-size: var(--text-md);
}
.btn--icon:hover { color: var(--text-primary); background: var(--surface-card-hover); }

/* ========================================
   FORMULÁRIO / MODAL
   ======================================== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  align-items: center;
  justify-content: center;
}
.modal-overlay--active { display: flex; }

.modal {
  background: var(--surface-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  width: 90%;
  max-width: 480px;
  box-shadow: var(--shadow-elevated);
  animation: modalIn var(--duration-slow) var(--easing-spring);
}

@keyframes modalIn { from { opacity: 0; transform: scale(0.95) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.modal__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
}

.form-group { margin-bottom: var(--space-4); }

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}

.form-input, .form-select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--surface-input);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  transition: border-color var(--duration-base) var(--easing-default);
}

.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: var(--shadow-glow-primary);
}

.form-input::placeholder { color: var(--text-tertiary); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.form-radio-group {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.form-radio {
  flex: 1;
  position: relative;
}

.form-radio input { display: none; }

.form-radio label {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
  text-align: center;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-base) var(--easing-default);
}

.form-radio input:checked + label {
  border-color: var(--accent-primary);
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.12);
}

.form-radio--income input:checked + label {
  border-color: var(--color-income);
  color: var(--color-income);
  background: var(--color-income-bg);
}

.form-radio--expense input:checked + label {
  border-color: var(--color-expense);
  color: var(--color-expense);
  background: var(--color-expense-bg);
}

/* ========================================
   LISTA DE TRANSAÇÕES
   ======================================== */
.transactions-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.transactions-header__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
}

.filter-bar {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
}

.filter-bar .form-select {
  width: auto;
  min-width: 130px;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-sm);
}

.transaction-list { display: flex; flex-direction: column; gap: var(--space-2); }

.transaction-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: all var(--duration-base) var(--easing-default);
}

.transaction-item:hover {
  background: var(--surface-card-hover);
  transform: translateX(4px);
}

.transaction-item__indicator {
  width: 4px;
  height: 40px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.transaction-item--income .transaction-item__indicator { background: var(--color-income); }
.transaction-item--expense .transaction-item__indicator { background: var(--color-expense); }

.transaction-item__info { flex: 1; min-width: 0; }

.transaction-item__desc {
  font-weight: var(--weight-semibold);
  font-size: var(--text-md);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.transaction-item__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.transaction-item__category {
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
}

.transaction-item__amount {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  white-space: nowrap;
}

.transaction-item--income .transaction-item__amount { color: var(--color-income); }
.transaction-item--expense .transaction-item__amount { color: var(--color-expense); }

.transaction-item__actions { flex-shrink: 0; }

.empty-state {
  text-align: center;
  padding: var(--space-12);
  color: var(--text-tertiary);
}

.empty-state__icon { font-size: 3rem; margin-bottom: var(--space-3); }
.empty-state__text { font-size: var(--text-md); }

/* ========================================
   METAS
   ======================================== */
.goals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

.goal-card {
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  transition: all var(--duration-base) var(--easing-default);
}

.goal-card:hover { box-shadow: var(--shadow-card-hover); }

.goal-card--exceeded { border-color: rgba(248, 113, 113, 0.4); }
.goal-card--exceeded .goal-card__bar-fill { background: linear-gradient(90deg, #EF4444, #F87171) !important; }

.goal-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.goal-card__category {
  font-weight: var(--weight-semibold);
  font-size: var(--text-md);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.goal-card__values {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.goal-card__bar {
  height: 8px;
  background: var(--surface-base);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.goal-card__bar-fill {
  height: 100%;
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-cyan));
  transition: width var(--duration-slow) var(--easing-default);
  max-width: 100%;
}

.goal-card__percentage {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  text-align: right;
}

.goal-card--exceeded .goal-card__percentage { color: var(--color-expense); }

.goal-form-inline {
  background: var(--surface-card);
  border: 1px dashed var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
  flex-wrap: wrap;
}

.goal-form-inline .form-group { margin-bottom: 0; flex: 1; min-width: 140px; }

/* ========================================
   TOAST
   ======================================== */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toast {
  background: var(--surface-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  color: var(--text-primary);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-elevated);
  animation: toastIn var(--duration-slow) var(--easing-spring);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.toast--success { border-left: 3px solid var(--color-income); }
.toast--error { border-left: 3px solid var(--color-expense); }

@keyframes toastIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ========================================
   RESPONSIVIDADE
   ======================================== */
@media (max-width: 1024px) {
  .summary-grid { grid-template-columns: repeat(3, 1fr); }
  .charts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .summary-grid { grid-template-columns: 1fr; }
  .main-content { padding: var(--space-4); }
  .app-header { padding: var(--space-3) var(--space-4); }
  .nav-tabs { padding: var(--space-2) var(--space-4); }
  .form-row { grid-template-columns: 1fr; }
  .transaction-item { flex-wrap: wrap; }
  .transaction-item__amount { width: 100%; text-align: right; }
  .goal-form-inline { flex-direction: column; }
  .filter-bar { width: 100%; }
}

@media (max-width: 480px) {
  .app-header__subtitle { display: none; }
  .nav-tab span { display: none; }
}