:root {
  --bg-main: #0b0f19;
  --bg-card: #131b2e;
  --bg-card-hover: #19233c;
  --border-color: #23304f;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.28);
  --accent-blue: #3b82f6;
  --accent-n8n: #ff6d5a;
  --radius: 14px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.45;
  padding: 20px;
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

/* =========================================
   PANTALLA DE LOGIN GOOGLE (AUTH GATE)
   ========================================= */
.auth-gate {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 20%, #16223b 0%, var(--bg-main) 75%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 200;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 38px 30px;
  max-width: 420px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 20px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.auth-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.auth-brand h1 {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.auth-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.auth-button-wrap {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 4px 0;
}

.auth-security-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 5px 12px;
  border-radius: 99px;
  font-weight: 600;
}

/* Pastilla de Perfil de Usuario en el Header */
.user-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  padding: 5px 12px 5px 8px;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 500;
}

.user-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--accent);
}

.btn-logout {
  background: rgba(248, 113, 113, 0.12);
  color: #f87171;
  font-size: 0.75rem;
  padding: 4px 8px;
  border-radius: 99px;
  margin-left: 4px;
}
.btn-logout:hover {
  background: rgba(248, 113, 113, 0.22);
}

/* =========================================
   ESTILOS GENERALES DE LA APLICACIÓN
   ========================================= */
.app-container {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Header & Controles */
.app-header {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg-card);
  padding: 16px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.header-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  flex-shrink: 0;
}

h1 {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge {
  font-size: 0.7rem;
  background: rgba(59, 130, 246, 0.18);
  color: var(--accent-blue);
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
}

.subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.week-navigator {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--bg-main);
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.week-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
}

.week-title {
  font-weight: 600;
  font-size: 0.9rem;
}

.week-dates {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Botones */
button, .file-label {
  cursor: pointer;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.86rem;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-primary {
  background: var(--accent);
  color: #052e16;
  padding: 10px 14px;
}
.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  background: var(--bg-main);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 8px 12px;
}

.btn-n8n {
  background: rgba(255, 109, 90, 0.15);
  color: var(--accent-n8n);
  border: 1px solid rgba(255, 109, 90, 0.4);
  padding: 10px 12px;
}

.btn-icon {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  width: 36px;
  height: 36px;
  font-size: 1rem;
  flex-shrink: 0;
}

.btn-sm {
  padding: 6px 10px;
  font-size: 0.78rem;
}

/* KPIs */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.kpi-label {
  font-size: 0.74rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.kpi-value {
  font-size: 1.55rem;
  font-weight: 700;
}

.kpi-sub {
  font-size: 0.76rem;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Paneles */
.panel-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 8px;
}

h2 { font-size: 1.05rem; font-weight: 600; }
.hint { font-size: 0.78rem; color: var(--text-secondary); }

/* Vista Tabla (Desktop) */
.table-responsive { overflow-x: auto; }
.habit-table { width: 100%; border-collapse: collapse; }
.habit-table th, .habit-table td {
  padding: 12px 8px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}
.habit-table th.col-habit, .habit-table td.habit-info-cell {
  text-align: left;
  min-width: 210px;
}

.day-header { cursor: pointer; border-radius: 8px; padding: 6px; }
.day-header:hover { background: var(--bg-card-hover); }
.day-header.is-today { background: rgba(16, 185, 129, 0.14); color: var(--accent); }
.day-header.selected-note-day { outline: 2px solid var(--accent-blue); }
.day-name { display: block; font-size: 0.8rem; font-weight: 600; }
.day-num { display: block; font-size: 0.72rem; color: var(--text-secondary); }
.note-indicator {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent-blue);
  border-radius: 50%;
  margin-left: 4px;
}

.check-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1.5px solid var(--border-color);
  background: var(--bg-main);
  color: transparent;
  margin: 0 auto;
}
.check-btn.done {
  background: var(--accent);
  border-color: var(--accent);
  color: #052e16;
  box-shadow: 0 0 10px var(--accent-glow);
}

.progress-bar-wrap {
  width: 100%;
  max-width: 110px;
  height: 7px;
  background: var(--bg-main);
  border-radius: 99px;
  overflow: hidden;
  margin: 0 auto 4px;
}
.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.25s ease;
}

/* Vista Tarjetas (Mobile) */
.mobile-only { display: none; }

.mobile-habits-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-habit-card {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.mobile-habit-title {
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.mobile-habit-meta {
  font-size: 0.76rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.mobile-badges {
  display: flex;
  align-items: center;
  gap: 6px;
}

.streak-pill {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 99px;
  white-space: nowrap;
}

.mobile-days-row {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.mobile-day-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px 2px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  color: var(--text-secondary);
  gap: 2px;
}

.mobile-day-btn .m-dname {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
}

.mobile-day-btn .m-dnum {
  font-size: 0.72rem;
  opacity: 0.85;
}

.mobile-day-btn.is-today {
  border-color: var(--accent-blue);
}

.mobile-day-btn.done {
  background: var(--accent);
  border-color: var(--accent);
  color: #052e16;
  box-shadow: 0 0 10px var(--accent-glow);
}
.mobile-day-btn.done .m-dnum { opacity: 1; font-weight: 700; }

.mobile-progress-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mobile-progress-row .progress-bar-wrap {
  max-width: none;
  flex: 1;
  margin: 0;
  background: var(--bg-card);
}

.mobile-progress-text {
  font-size: 0.75rem;
  color: var(--text-secondary);
  min-width: 68px;
  text-align: right;
}

/* Sección Inferior: Notas y Gráficos */
.bottom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.day-selector-pills {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.day-selector-pills::-webkit-scrollbar { display: none; }

.day-pill {
  flex: 1;
  min-width: 66px;
  padding: 8px 6px;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.76rem;
  flex-shrink: 0;
}
.day-pill.active {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
}
.day-pill.has-note::after {
  content: "•";
  color: var(--accent);
  font-size: 1rem;
  margin-left: 2px;
}

.note-textarea {
  width: 100%;
  min-height: 100px;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  padding: 12px;
  font-family: inherit;
  font-size: 0.92rem;
  resize: vertical;
  margin-bottom: 12px;
}

.save-status { font-size: 0.76rem; color: var(--accent); }

.week-notes-overview h3 {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.week-notes-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 140px;
  overflow-y: auto;
}

.week-notes-list li {
  font-size: 0.82rem;
  background: var(--bg-main);
  padding: 8px 10px;
  border-radius: 8px;
  border-left: 3px solid var(--accent-blue);
}

/* Gráfico */
.chart-tabs { display: flex; gap: 6px; }
.tab-btn {
  padding: 6px 12px;
  background: var(--bg-main);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  font-size: 0.78rem;
}
.tab-btn.active {
  background: var(--accent);
  color: #052e16;
  border-color: var(--accent);
}

.chart-container {
  height: 230px;
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  gap: 8px;
  padding-top: 24px;
}

.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
  gap: 6px;
}

.bar-track {
  width: 100%;
  max-width: 38px;
  height: 160px;
  background: var(--bg-main);
  border-radius: 8px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.bar-fill {
  width: 100%;
  background: linear-gradient(180deg, var(--accent), #059669);
  border-radius: 6px 6px 0 0;
  transition: height 0.3s ease;
}

.bar-pct { font-size: 0.72rem; font-weight: 600; }
.bar-label { font-size: 0.7rem; color: var(--text-secondary); text-align: center; }

/* Modales */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 15, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 14px;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  width: 100%;
  max-width: 440px;
  padding: 20px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-lg { max-width: 640px; }

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

form, .modal-body { display: flex; flex-direction: column; gap: 12px; }
label { display: flex; flex-direction: column; gap: 5px; font-size: 0.82rem; color: var(--text-secondary); }
.checkbox-label { flex-direction: row; align-items: center; color: var(--text-primary); }

input[type="text"], input[type="number"], input[type="url"] {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: 0.92rem;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.modal-actions, .n8n-actions-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.info-box {
  background: var(--bg-main);
  border-left: 3px solid var(--accent-n8n);
  padding: 10px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-radius: 6px;
}
.code-preview {
  background: #070a12;
  border: 1px solid var(--border-color);
  padding: 10px;
  border-radius: 8px;
  font-family: monospace;
  font-size: 0.74rem;
  color: #a7f3d0;
  max-height: 170px;
  overflow-y: auto;
}

/* =========================================
   MEDIA QUERIES — OPTIMIZACIÓN CELULAR
   ========================================= */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }
  .app-container {
    gap: 14px;
  }
  .app-header {
    padding: 14px;
  }
  h1 {
    font-size: 1.1rem;
  }
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .kpi-card {
    padding: 12px 14px;
  }
  .kpi-value {
    font-size: 1.35rem;
  }
  .panel-card {
    padding: 14px;
  }
  .desktop-only {
    display: none !important;
  }
  .mobile-only {
    display: flex !important;
  }
  .bottom-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}