/* ============================================
   Main - Stili comuni Antaris
   Variabili, reset, layout, componenti condivisi
   ============================================ */

:root {
  --bg: #0f172a;
  --card: #1e293b;
  --accent: #38bdf8;
  --text: #f1f5f9;
  --danger: #ef4444;
  --border: #334155;
  --text-secondary: #94a3b8;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 20px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
}

header {
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 15px;
}

header[data-nav="admin"] {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

header[data-nav="admin"] .menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: transparent;
  cursor: pointer;
  padding: 0;
  gap: 4px;
}

header[data-nav="admin"] .menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--text);
  border-radius: 999px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

header[data-nav="admin"] .nav-menu {
  display: flex;
  align-items: center;
  gap: 16px;
}

header[data-nav="admin"] .nav-menu a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 999px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

header[data-nav="admin"] .nav-menu a.nav-attivo {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

header[data-nav="admin"] .nav-menu a:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

@media (max-width: 768px) {
  header[data-nav="admin"] {
    align-items: flex-start;
  }

  header[data-nav="admin"] .menu-toggle {
    display: flex;
  }

  header[data-nav="admin"] .nav-menu {
    position: absolute;
    top: 60px;
    right: 20px;
    left: 20px;
    flex-direction: column;
    padding: 10px;
    border-radius: 12px;
    background-color: rgba(15, 23, 42, 0.96);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(148, 163, 184, 0.6);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.18s ease, transform 0.18s ease;
  }

  header[data-nav="admin"] .nav-menu.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
}

.accent {
  color: var(--accent);
}

/* Griglia e card (condivise) */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background-color: var(--card);
  padding: 25px;
  border-radius: 16px;
  border: 1px solid var(--border);
  transition: transform 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}

.card h3 {
  margin: 0 0 15px 0;
  font-size: 0.85rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.stat {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 5px;
}

.sub-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Barre di caricamento */
.bar-bg {
  background: var(--border);
  height: 12px;
  border-radius: 6px;
  overflow: hidden;
  margin-top: 10px;
}

.bar-fill {
  background: linear-gradient(90deg, var(--accent), #818cf8);
  height: 100%;
  width: 0%;
  transition: width 1s ease-in-out;
}

/* Bottoni */
.btn-logout {
  background-color: var(--danger);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: opacity 0.2s;
}

.btn-logout:hover {
  opacity: 0.8;
}

.btn-primary {
  background-color: var(--accent);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: opacity 0.2s;
  display: inline-block;
  box-sizing: border-box;
  max-width: 100%;
}

.btn-primary:hover {
  opacity: 0.8;
}

.btn-secondary {
  background-color: var(--card);
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: opacity 0.2s, border-color 0.2s;
  box-sizing: border-box;
  max-width: 100%;
}

.btn-secondary:hover {
  opacity: 0.8;
  border-color: var(--accent);
}

.btn-danger {
  background-color: var(--danger);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: opacity 0.2s;
  box-sizing: border-box;
  max-width: 100%;
}

.btn-danger:hover {
  opacity: 0.8;
}

.btn-small {
  padding: 6px 12px;
  font-size: 0.85rem;
  border-radius: 6px;
  min-width: 80px;
  text-align: center;
  box-sizing: border-box;
  max-width: 100%;
}

.btn-small.btn-primary,
.btn-small.btn-danger {
  padding: 6px 12px;
  min-width: 80px;
}

/* Bottone "Torna all'Admin" (pagine Dashboard, Cloud, Monitoraggio) */
.btn-torna-admin {
  display: inline-block;
  margin-bottom: 20px;
  text-decoration: none;
}

.btn-torna-admin:hover {
  opacity: 0.9;
}

/* File input */
.file-input-wrapper {
  position: relative;
  width: 100%;
  max-width: 100%;
  margin-bottom: 10px;
  box-sizing: border-box;
}

.file-input {
  width: 100%;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--text);
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.file-input::-webkit-file-upload-button,
.file-input::file-selector-button {
  display: none;
}

.file-input:hover,
.file-input:focus {
  border-color: var(--accent);
}

.file-input:focus {
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

.file-input-label {
  display: block;
  width: 100%;
  max-width: 100%;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: white;
  background-color: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  transition: opacity 0.2s;
  box-sizing: border-box;
}

.file-input-label:hover {
  opacity: 0.8;
}

.file-input-label input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Menu hamburger e navigazione */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.nav-menu {
  display: flex;
  gap: 15px;
  align-items: center;
}

.nav-menu a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
}

.nav-menu a:hover {
  opacity: 0.8;
}

/* Responsive comune */
@media (max-width: 768px) {
  body {
    padding: 15px;
  }

  header {
    flex-wrap: wrap;
    gap: 15px;
  }

  header h1 {
    font-size: 1.5rem;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 80px 20px 20px;
    gap: 20px;
    z-index: 1000;
    overflow-y: auto;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu a {
    width: 100%;
    padding: 15px;
    background: var(--card);
    border-radius: 8px;
    border: 1px solid var(--border);
    text-align: left;
  }

  .nav-menu a.btn-logout {
    background: var(--danger);
    color: white;
    text-align: center;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 20px;
  }

  .stat {
    font-size: 1.5rem;
  }

  .card h3 {
    font-size: 0.75rem;
  }

  .btn-primary,
  .btn-secondary,
  .btn-danger,
  .btn-small,
  .file-input-label {
    box-sizing: border-box;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  header {
    margin-bottom: 20px;
    padding-bottom: 10px;
  }

  header h1 {
    font-size: 1.25rem;
  }

  .menu-toggle span {
    width: 22px;
    height: 2.5px;
  }

  .nav-menu {
    padding: 70px 15px 15px;
    gap: 15px;
  }

  .nav-menu a {
    padding: 12px;
    font-size: 0.9rem;
  }

  .grid {
    gap: 15px;
  }

  .card {
    padding: 15px;
    border-radius: 12px;
  }

  .card h3 {
    font-size: 0.7rem;
    margin-bottom: 12px;
    letter-spacing: 1px;
  }

  .stat {
    font-size: 1.4rem;
    margin-bottom: 4px;
  }

  .sub-text {
    font-size: 0.75rem;
  }

  .bar-bg {
    height: 10px;
    margin-top: 8px;
  }

  .btn-logout {
    padding: 8px 16px;
    font-size: 0.85rem;
  }

  .btn-primary,
  .btn-secondary,
  .btn-danger {
    box-sizing: border-box;
    max-width: 100%;
  }
}

@media (max-width: 360px) {
  body {
    padding: 8px;
  }

  header h1 {
    font-size: 1.1rem;
  }

  .card {
    padding: 12px;
  }

  .stat {
    font-size: 1.2rem;
  }

  .card h3 {
    font-size: 0.65rem;
  }

  .sub-text {
    font-size: 0.7rem;
  }

  .nav-menu a {
    padding: 10px;
    font-size: 0.85rem;
  }

  .btn-primary,
  .btn-secondary,
  .btn-danger,
  .btn-small,
  .file-input-label {
    box-sizing: border-box;
    max-width: 100%;
  }
}