/* ===================================
   TEMA DARK/LIGHT MODE
=================================== */

/* Variabili tema light (default) */
:root {
  /* Colori principali */
  --blue: #0d47a1;
  --azul: #1976d2;
  --blue-hover: #125ea7;
  
  /* Backgrounds */
  --bg-primary: #e3f2fd;
  --bg-card: #ffffff;
  --bg-navbar: var(--blue);
  --bg-input: #ffffff;
  --bg-input-disabled: #f3f6fb;
  --bg-actions: #d9e4f2;
  
  /* Testi */
  --text-primary: #1f2d3d;
  --text-secondary: #6b7c93;
  --text-muted: #8aa0bd;
  --text-on-primary: #ffffff;
  
  /* Bordi */
  --border: #dbe5f3;
  --border-soft: #e5e5e5;
  --border-input: #c9d7ee;
  
  /* Altro */
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 2px 6px rgba(0,0,0,.08);
  --container-max: 1100px;
  --space: 16px;
  --navbar-h: 56px;
  
  /* Transizione tema */
  --theme-transition: background-color 0.3s ease, 
                      color 0.3s ease, 
                      border-color 0.3s ease;
}

/* Variabili tema dark */
[data-theme="dark"] {
  /* Backgrounds */
  --bg-primary: #0f172a;
  --bg-card: #1e293b;
  --bg-navbar: #0f172a;
  --bg-input: #334155;
  --bg-input-disabled: #1e293b;
  --bg-actions: #334155;
  
  /* Testi */
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-on-primary: #f1f5f9;
  
  /* Bordi */
  --border: #334155;
  --border-soft: #475569;
  --border-input: #475569;
  
  /* Ombre più marcate per dark mode */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.3);
  --shadow-md: 0 4px 8px rgba(0,0,0,.4);
  
  /* Colori primari leggermente più chiari per contrasto */
  --azul: #3b82f6;
  --blue-hover: #2563eb;
}

/* Applicazione transizioni smooth */
*,
*::before,
*::after {
  transition: var(--theme-transition);
}

/* Toggle theme button */
.theme-toggle {
  position: relative;
  background: transparent;
  border: 2px solid var(--border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  padding: 0;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background: var(--bg-input);
  border-color: var(--azul);
  transform: rotate(180deg);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

/* Icone tema */
.theme-icon-sun,
.theme-icon-moon {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

[data-theme="light"] .theme-icon-moon,
[data-theme="dark"] .theme-icon-sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0);
}

[data-theme="light"] .theme-icon-sun,
[data-theme="dark"] .theme-icon-moon {
  opacity: 1;
  transform: rotate(0) scale(1);
}

/* Inversione colori per alcuni elementi in dark mode */
[data-theme="dark"] img:not(.no-invert) {
  filter: brightness(0.9) contrast(1.1);
}

[data-theme="dark"] .card,
[data-theme="dark"] .box {
  box-shadow: var(--shadow-sm);
  border-color: var(--border);
}

/* Miglioramento contrasto input in dark mode */
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
  background: var(--bg-input);
  color: var(--text-primary);
  border-color: var(--border-input);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
  border-color: var(--azul);
  box-shadow: 0 0 0 3px rgba(59,130,246,.2);
}

/* Navbar in dark mode */
[data-theme="dark"] .navbar {
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0,0,0,.5);
}

/* Code blocks in dark mode */
[data-theme="dark"] code,
[data-theme="dark"] pre {
  background: #1e293b;
  color: #e2e8f0;
}

/* Link color adjustment for dark mode */
[data-theme="dark"] a.link {
  color: #60a5fa;
}

[data-theme="dark"] a.link:hover {
  color: #93c5fd;
}

/* Bootstrap alerts in dark mode */
[data-theme="dark"] .alert {
  border-color: var(--border);
}

[data-theme="dark"] .alert-info {
  background: #1e3a5f;
  color: #90cdf4;
  border-color: #2c5282;
}

[data-theme="dark"] .alert-success {
  background: #1e4620;
  color: #9ae6b4;
  border-color: #276749;
}

[data-theme="dark"] .alert-warning {
  background: #5a3e1a;
  color: #fbd38d;
  border-color: #744210;
}

[data-theme="dark"] .alert-danger {
  background: #5a1a1a;
  color: #fc8181;
  border-color: #742a2a;
}

/* Scroll bar styling for dark mode */
[data-theme="dark"] ::-webkit-scrollbar {
  width: 12px;
  background: var(--bg-primary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 6px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Print: force light mode */
@media print {
  [data-theme="dark"] {
    --bg-primary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #000000;
    --text-secondary: #333333;
    --border: #cccccc;
  }
}

/* Prefers color scheme (rispetta preferenza OS) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    /* Auto-attiva dark mode se OS in dark mode e utente non ha scelto light */
    --bg-primary: #0f172a;
    --bg-card: #1e293b;
    --bg-navbar: #0f172a;
    --bg-input: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border: #334155;
  }
}