/* ============================================
   VATManager – Custom Theme
   Complementa Bootstrap 5 con classi custom
   per i template legacy + estetica moderna.
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-primary-subtle: #eff6ff;
  --color-secondary: #64748b;
  --color-success: #16a34a;
  --color-success-bg: #dcfce7;
  --color-warning: #d97706;
  --color-warning-bg: #fef3c7;
  --color-danger: #dc2626;
  --color-danger-bg: #fee2e2;
  --color-info: #0891b2;
  --color-info-bg: #cffafe;
  --color-bg: #f1f5f9;
  --color-bg-secondary: #f1f5f9;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-border: #e2e8f0;
  --color-border-focus: #93c5fd;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.1);
  --transition: .2s ease;
}

/* ---------- Base ---------- */
body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-hover); }

/* ============================================
   NAVBAR — Design premium scuro
   ============================================ */
.navbar {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%) !important;
  box-shadow: 0 2px 12px rgba(0,0,0,.2);
  padding-top: .6rem;
  padding-bottom: .6rem;
}

.navbar .navbar-brand {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -.02em;
}

.navbar .nav-link {
  font-size: .875rem;
  font-weight: 500;
  padding: .45rem .75rem !important;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
  background: rgba(255,255,255,.1);
}

.navbar .dropdown-menu {
  border: none;
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
  padding: .5rem;
}

.navbar .dropdown-item {
  border-radius: 6px;
  font-size: .875rem;
  padding: .5rem .75rem;
  transition: background var(--transition);
}

.navbar .dropdown-item:hover {
  background: var(--color-primary-subtle);
}

/* ============================================
   ALERTS — bordo sinistro colorato + animazione
   ============================================ */
.alert {
  border-left: 4px solid transparent;
  border-radius: var(--radius-sm);
  animation: slideDown .3s ease;
}

.alert-success { border-left-color: var(--color-success); }
.alert-danger  { border-left-color: var(--color-danger); }
.alert-warning { border-left-color: var(--color-warning); }
.alert-info    { border-left-color: var(--color-info); }

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

.fade-out {
  animation: fadeOut .5s ease forwards;
}
@keyframes fadeOut {
  to { opacity: 0; transform: translateY(-8px); height: 0; margin: 0; padding: 0; overflow: hidden; }
}

/* ============================================
   CARDS — Override Bootstrap per look moderno
   ============================================ */
.card {
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  background: var(--color-surface);
}

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

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: .5rem;
}

.card p {
  font-size: .875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.card-header {
  border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
  font-weight: 600;
}

/* ============================================
   FORM ELEMENTS — Bootstrap enhancement
   ============================================ */
.form-control, .form-select {
  font-family: var(--font);
  border-radius: var(--radius-sm);
  border-color: var(--color-border);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus, .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

.form-label {
  font-weight: 600;
  font-size: .875rem;
  color: var(--color-text);
}

/* ============================================
   TABLE — Bootstrap enhancement
   ============================================ */
.table thead th {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: #6b7280;
  border-bottom-width: 2px;
  white-space: nowrap;
}

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

.table tbody tr:hover {
  background: var(--color-primary-subtle) !important;
}

/* ============================================
   AUTH PAGES (login/register) — standalone
   ============================================ */
.auth-container {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #2563eb 100%);
  padding: 1.5rem;
}

.auth-box {
  background: var(--color-surface);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0,0,0,.2);
  max-width: 440px;
  width: 100%;
  animation: fadeInUp .4s ease;
}

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

.auth-box h1 {
  font-size: 1.5rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: .25rem;
}

.auth-box h1::before {
  content: '📊';
  display: block;
  font-size: 2.5rem;
  margin-bottom: .5rem;
}

.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: .875rem;
  color: var(--color-text-secondary);
}

/* ============================================
   CUSTOM LEGACY CLASSES
   Usate da template non ancora migrati a Bootstrap
   ============================================ */

/* --- Buttons --- */
.btn-block { width: 100%; }

.btn-small {
  padding: .375rem .75rem;
  font-size: .8rem;
  border-radius: 6px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  display: inline-block;
  text-decoration: none;
  text-align: center;
  transition: all var(--transition);
}

.btn-small.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-small.btn-secondary:hover {
  background: #e2e8f0;
}

.btn-small.btn-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid transparent;
}
.btn-small.btn-danger:hover {
  background: var(--color-danger);
  color: #fff;
}

/* --- Form group (legacy) --- */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: .875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: .375rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: .625rem .85rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-family: var(--font);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

.form-group small {
  display: block;
  margin-top: .3rem;
  font-size: .78rem;
  color: var(--color-text-secondary);
}

.form-container { max-width: 600px; }

/* --- Hero section (index) --- */
.hero {
  text-align: center;
  padding: 2rem 1rem 1rem;
}

.hero h1 {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #0f172a, #2563eb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: .5rem;
}

.hero .subtitle {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
}

/* --- Cards grid (index, settings) --- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.cards-grid .card {
  padding: 1.5rem;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.settings-grid .card {
  padding: 1.5rem;
}

/* --- Two-column layout (vat_config, amazon_api) --- */
.two-column-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1rem;
}

.two-column-layout .column {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.two-column-layout .column h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

/* --- Upload zone (file_upload) --- */
.upload-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1rem;
}

.upload-info {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.upload-info h3 {
  font-size: .95rem;
  font-weight: 700;
  margin: 1rem 0 .5rem;
}
.upload-info h3:first-child { margin-top: 0; }

.upload-info ul { list-style: none; padding: 0; }
.upload-info ul li {
  font-size: .85rem;
  color: var(--color-text-secondary);
  padding: .25rem 0 .25rem 1.2rem;
  position: relative;
}
.upload-info ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}

.upload-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.file-drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--color-bg);
  margin-bottom: 1.25rem;
}

.file-drop-zone:hover,
.file-drop-zone.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.file-drop-zone p::before {
  content: '📁';
  display: block;
  font-size: 2.5rem;
  margin-bottom: .75rem;
}

.file-drop-zone input[type="file"] { display: none; }

.file-drop-zone.has-file {
  border-color: var(--color-success);
  background: var(--color-success-bg);
}
.file-drop-zone.has-file p { color: #166534; }
.file-drop-zone.has-file p::before { content: '✅'; }

/* --- Info box --- */
.info-box {
  background: var(--color-primary-subtle);
  border: 1px solid var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.info-box h3, .info-box h6 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--color-primary-hover);
  margin-bottom: .5rem;
}

.info-box p {
  font-size: .875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: .5rem;
}
.info-box p:last-child { margin-bottom: 0; }

.info-box ul { list-style: none; padding: 0; }
.info-box ul li {
  font-size: .875rem;
  color: var(--color-text-secondary);
  padding: .2rem 0 .2rem 1.2rem;
  position: relative;
}
.info-box ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.info-message {
  color: var(--color-text-secondary);
  font-style: italic;
  font-size: .9rem;
}

/* --- Data table (legacy) --- */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: 1rem 0;
  background: var(--color-surface);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
}

.data-table thead {
  background: linear-gradient(135deg, #0f172a, #1e3a5f);
}

.data-table thead th {
  color: #ffffff;
  padding: .8rem 1rem;
  font-weight: 600;
  text-align: left;
  white-space: nowrap;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.data-table tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.data-table tbody tr:hover {
  background: var(--color-primary-subtle);
}

.data-table tbody tr:nth-child(even) {
  background: #f8fafc;
}
.data-table tbody tr:nth-child(even):hover {
  background: var(--color-primary-subtle);
}

.data-table tbody td {
  padding: .7rem 1rem;
  color: var(--color-text);
}

/* --- Report form --- */
.report-form-container { max-width: 650px; }

/* --- Error page --- */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  text-align: center;
}

.error-page h1 {
  font-size: 5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0;
  line-height: 1;
}

.error-page p {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  margin: 1rem 0 1.5rem;
}

/* ============================================
   PAGE HEADINGS
   ============================================ */
h1 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-text);
}

h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: .75rem;
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ============================================
   SPINNER
   ============================================ */
.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2.5px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin .6s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn .spinner { width: 16px; height: 16px; border-width: 2px; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .two-column-layout,
  .upload-container {
    grid-template-columns: 1fr;
  }
  .cards-grid,
  .settings-grid {
    grid-template-columns: 1fr;
  }
  .hero h1 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .auth-box { padding: 2rem 1.25rem; }
}

/* ============================================
   FIX BTN-CLOSE — X sempre visibile sugli alert
   Problema: Bootstrap 5 sovrascrive background con
   --bs-btn-close-bg e applica filter:invert(1).
   Soluzione: !important su image, opacity e filter.
   ============================================ */

/* Reset completo del btn-close Bootstrap dentro gli alert */
.alert .btn-close {
  --bs-btn-close-bg: none;                  /* neutralizza variabile Bootstrap */
  background-color: transparent !important;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231e293b'%3e%3cpath d='M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 0 1-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 0 1-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414z'/%3e%3c/svg%3e") !important;
  background-repeat: no-repeat !important;
  background-position: center !important;
  background-size: 0.875em !important;
  opacity: 0.55 !important;
  filter: none !important;
  width: 1.5em;
  height: 1.5em;
  padding: 0.25em;
  border-radius: 4px;
  flex-shrink: 0;
}

.alert .btn-close:hover {
  opacity: 1 !important;
  background-color: rgba(0, 0, 0, 0.06) !important;
}

/* Banner OSS in cima alla pagina — posizionamento assoluto */
.rounded-0 .btn-close {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
}