/* ==========================================================================
   Estilos principales: Calculadora de cuentas compartidas (Fijate Tools)
   ========================================================================== */

:root {
  --primary: #ff8507;
  --primary-hover: #e07400;
  --primary-light: rgba(255, 133, 7, 0.12);
  --primary-glow: rgba(255, 133, 7, 0.35);

  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.15);
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.15);
  --whatsapp: #25d366;
  --whatsapp-hover: #1eb956;

  --bg-main: #0b0f17;
  --bg-card: #131b26;
  --bg-card-hover: #1a2434;
  --bg-input: #0e1520;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(255, 133, 7, 0.5);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-input: #f8fafc;
  --border-color: rgba(0, 0, 0, 0.08);
  --border-focus: rgba(255, 133, 7, 0.6);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Cabecera estándar de la aplicación */
.app-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.btn-back-tools {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-back-tools:hover {
  color: var(--text-main);
  border-color: var(--primary);
  transform: translateX(-2px);
}

.brand-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo-box {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), #fbbf24);
  color: #0b0f17;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
  margin: 0;
}

.brand-subtitle {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  color: var(--text-main);
  border-color: var(--primary);
  background: var(--bg-card-hover);
}

/* Contenedor principal */
.main-wrapper {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

/* Hero */
.tool-hero {
  text-align: center;
  margin-bottom: 2rem;
}

.tool-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  border: 1px solid rgba(255, 133, 7, 0.25);
}

.tool-hero h2 {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.tool-hero p {
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
  font-size: 0.98rem;
}

/* Barra superior de título de grupo */
.group-header-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.group-title-input {
  font-size: 1.2rem;
  font-weight: 800;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: inherit;
  width: 100%;
  max-width: 420px;
}

.group-title-input:focus {
  outline: none;
  border-bottom: 2px solid var(--primary);
}

/* Layout de dos columnas */
.split-dashboard-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1.5rem;
  align-items: start;
}

/* Tarjetas de formulario */
.split-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  margin-bottom: 1.5rem;
}

.split-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Participantes */
.participants-pills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.participant-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

.participant-avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  color: #0b0f17;
  font-weight: 800;
  font-size: 0.72rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-remove-participant {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0 2px;
}

.btn-remove-participant:hover {
  color: var(--danger);
}

.add-input-group {
  display: flex;
  gap: 0.5rem;
}

.input-control {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  font-size: 0.92rem;
  font-family: inherit;
  transition: all 0.2s ease;
}

.input-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.shared-checks-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  background: var(--bg-input);
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.shared-check-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  cursor: pointer;
  user-select: none;
}

.shared-check-label input {
  accent-color: var(--primary);
}

/* HUD resumen */
.hud-metrics-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.hud-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem 1rem;
  text-align: center;
}

.hud-pill.highlight {
  border-color: rgba(255, 133, 7, 0.4);
  background: linear-gradient(180deg, var(--bg-card), rgba(255, 133, 7, 0.05));
}

.hud-pill .val {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.hud-pill .lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Tarjetas de balances individuales */
.balances-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.balance-person-card {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.balance-person-card.positive {
  border-color: rgba(16, 185, 129, 0.3);
}

.balance-person-card.negative {
  border-color: rgba(239, 68, 68, 0.3);
}

.balance-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.balance-person-name {
  font-weight: 700;
  font-size: 0.95rem;
}

.badge-status {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.8rem;
  text-align: center;
}

.badge-status.receive {
  background: var(--success-light);
  color: var(--success);
}

.badge-status.pay {
  background: var(--danger-light);
  color: var(--danger);
}

.badge-status.even {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
}

.balance-details {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

/* Tarjetas de transferencias simplificadas (Bizums) */
.transfers-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.transfer-instruction-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.85rem 1.25rem;
}

.transfer-from-to {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  font-weight: 700;
}

.person-tag {
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
}

.person-tag.debtor {
  background: var(--danger-light);
  color: var(--danger);
}

.person-tag.creditor {
  background: var(--success-light);
  color: var(--success);
}

.transfer-arrow {
  color: var(--text-dim);
  font-size: 1.2rem;
}

.transfer-amount-tag {
  text-align: right;
}

.transfer-amount-tag span {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
}

.transfer-amount-tag small {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.transfers-empty {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* Lista de gastos */
.expenses-list-container {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  max-height: 360px;
  overflow-y: auto;
}

.expense-item-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 1rem;
}

.expense-title-text {
  font-weight: 700;
  font-size: 0.92rem;
}

.expense-sub-text {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.expense-amount-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.expense-amount-val {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-main);
}

.btn-delete-expense {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
}

.btn-delete-expense:hover {
  color: var(--danger);
}

/* Botones principales */
.btn-primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  background: var(--primary);
  color: #0b0f17 !important;
  font-weight: 700;
  border-radius: 8px;
  border: none;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-whatsapp {
  background: var(--whatsapp);
  color: #ffffff !important;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.25);
}

.btn-whatsapp:hover {
  background: var(--whatsapp-hover);
  transform: translateY(-1px);
}

.btn-whatsapp.copied {
  background: var(--primary);
}

/* Sección divulgativa */
.edu-section {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
}

.edu-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.edu-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* Responsive */
@media (max-width: 920px) {
  .split-dashboard-grid {
    grid-template-columns: 1fr;
  }
  .hud-metrics-bar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .edu-section {
    grid-template-columns: 1fr;
  }
}

/* @media print */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .app-header, .fijate-footer, .add-input-group, .form-group, .btn-primary-action, .edu-section {
    display: none !important;
  }
  .split-card, .hud-pill, .balance-person-card, .transfer-instruction-card {
    border: 1px solid #cccccc;
    background: #ffffff;
    color: #000000;
  }
}