/* =========================================================================
   Kaizen Management System — Stylesheet
   Theme: professional blue & white, rounded cards, minimal decoration.
   ========================================================================= */

:root {
  --blue-900: #0a3a66;
  --blue-700: #0e4f8f;
  --blue-600: #1266b3;
  --blue-500: #1c7bd1;
  --blue-100: #e7f1fb;
  --blue-50:  #f3f8fd;

  --ink-900: #16232e;
  --ink-600: #4a5b6b;
  --ink-400: #7c8a97;

  --border: #dfe7ee;
  --bg: #f2f6fa;
  --card-bg: #ffffff;

  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --shadow-sm: 0 1px 2px rgba(16, 40, 68, 0.06), 0 1px 1px rgba(16, 40, 68, 0.04);
  --shadow-md: 0 10px 24px rgba(16, 40, 68, 0.10);
}

* { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--ink-900);
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
}

/* ---------------------------- Navbar ---------------------------- */

.app-navbar {
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 100%);
  box-shadow: var(--shadow-sm);
}

.app-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  color: #fff !important;
}

.app-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.15);
  font-weight: 700;
}

.app-brand-sub {
  font-weight: 400;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  border-left: 1px solid rgba(255, 255, 255, 0.3);
  padding-left: 0.6rem;
  margin-left: 0.2rem;
}

.navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: background 0.15s ease, color 0.15s ease;
}

.navbar-nav .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.navbar-nav .nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
}

/* ---------------------------- Layout ---------------------------- */

.app-main { max-width: 1140px; }

.page-header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 0.15rem;
}

.app-page { animation: fadeIn 0.18s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.panel-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem;
  margin-top: 1.25rem;
}

/* ---------------------------- Home cards ---------------------------- */

.home-cards { margin-top: 1.5rem; }

.home-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.home-card:hover,
.home-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--blue-500);
  outline: none;
}

.home-card-icon {
  display: block;
  font-size: 2.4rem;
  margin-bottom: 0.6rem;
}

.home-card-title {
  display: block;
  font-weight: 700;
  color: var(--blue-900);
  font-size: 1.02rem;
}

.home-card-desc {
  display: block;
  color: var(--ink-400);
  font-size: 0.82rem;
  margin-top: 0.2rem;
}

/* ---------------------------- Forms ---------------------------- */

.form-label {
  font-weight: 600;
  color: var(--ink-600);
  font-size: 0.88rem;
}

.required-label::after {
  content: " *";
  color: #c0392b;
}

.form-control, .form-select {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.checkbox-group {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  background: var(--blue-50);
}

.checkbox-group .form-check {
  margin-bottom: 0.35rem;
}

.checkbox-group .form-check:last-child {
  margin-bottom: 0;
}

.colleague-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.4rem;
  background: #fff;
}

.colleague-row .btn {
  padding: 0 0.25rem;
  line-height: 1;
}

.form-control:focus, .form-select:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 0.2rem rgba(28, 123, 209, 0.15);
}

.btn-app-primary {
  background: var(--blue-600);
  border-color: var(--blue-600);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.btn-app-primary:hover {
  background: var(--blue-700);
  border-color: var(--blue-700);
  color: #fff;
}

.btn-outline-primary, .btn-outline-secondary, .btn-outline-success {
  border-radius: var(--radius-sm);
  font-weight: 600;
}

/* ---------------------------- Register table ---------------------------- */

.app-table thead th {
  color: var(--ink-600);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

.app-table td {
  vertical-align: middle;
  border-bottom: 1px solid var(--border);
}

.app-table tbody tr:hover { background: var(--blue-50); }

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
}

.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.6;
}

/* ---------------------------- AI Suggestion chips ---------------------------- */

.source-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.chip {
  background: var(--blue-100);
  color: var(--blue-700);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.suggestion-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--blue-500);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.1rem 1.25rem;
  margin-bottom: 0.9rem;
}

.suggestion-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 0.35rem;
}

.suggestion-card p {
  font-size: 0.9rem;
  color: var(--ink-600);
  margin-bottom: 0.6rem;
}

/* ---------------------------- Footer ---------------------------- */

.app-footer {
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

/* ---------------------------- Utility ---------------------------- */

.d-none { display: none !important; }

/* ---------------------------- Print ---------------------------- */

@media print {
  .app-navbar, .app-footer, #toastHost,
  #btnImproveAI, #btnSaveKaizen, #btnExportWord, #btnPrintKaizen {
    display: none !important;
  }
  body { background: #fff; }
  .panel-card { box-shadow: none; border: none; padding: 0; }
}