:root {
  --bg: #0f172a;
  /* slate-900 */
  --card: rgba(255, 255, 255, 0.08);
  --card-border: rgba(255, 255, 255, 0.12);
  --fg: #e2e8f0;
  /* slate-200 */
  --muted: #94a3b8;
  /* slate-400 */
  --primary: #6366f1;
  /* indigo-500 */
  --primary-strong: #4f46e5;
  /* indigo-600 */
  --danger: #ef4444;
  /* red-500 */
  --shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f1f5f9;
    /* slate-100 */
    --card: rgba(255, 255, 255, 0.8);
    --card-border: rgba(15, 23, 42, 0.08);
    --fg: #0f172a;
    /* slate-900 */
    --muted: #475569;
    /* slate-600 */
    --shadow: 0 12px 30px rgba(2, 6, 23, 0.08);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  color: var(--fg);
  background:
    radial-gradient(1200px 600px at 10% 10%, rgba(99, 102, 241, 0.15), transparent 60%),
    radial-gradient(1000px 600px at 90% 90%, rgba(236, 72, 153, 0.12), transparent 60%),
    var(--bg);
}

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

a:hover {
  text-decoration: underline;
}

.auth-wrap {
  min-height: 100%;
  display: grid;
  grid-template-rows: 1fr auto;
  align-items: center;
  justify-items: center;
  padding: 24px;
}

.auth-card {
  width: min(420px, 92vw);
  background: var(--card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 28px;
  animation: rise 400ms ease-out both;
}

@keyframes rise {
  from {
    transform: translateY(10px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.auth-header {
  text-align: center;
  margin-bottom: 18px;
}

.auth-logo {
  width: 56px;
  height: 56px;
  margin: 0 auto 10px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: white;
  box-shadow: 0 10px 20px rgba(79, 70, 229, 0.35);
  font-size: 22px;
}

.auth-header h1 {
  margin: 6px 0 2px;
  font-size: 1.65rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.auth-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.input-group {
  margin: 14px 0;
}

.input-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 8px;
  color: var(--fg);
}

.input-group input {
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--fg);
  outline: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
}

.input-group input::placeholder {
  color: color-mix(in lab, var(--muted) 70%, transparent);
}

.input-group input:focus {
  border-color: color-mix(in lab, var(--primary) 65%, white 35%);
  box-shadow: 0 0 0 4px color-mix(in lab, var(--primary) 20%, transparent);
  background: rgba(255, 255, 255, 0.09);
}

.password-wrap {
  position: relative;
}

.password-wrap input {
  padding-right: 44px;
}

.icon-btn {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.06);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background .2s, transform .05s;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.icon-btn:active {
  transform: translateY(-50%) scale(0.98);
}

.field-error {
  display: block;
  min-height: 1.2em;
  color: var(--danger);
  margin-top: 6px;
  font-size: 0.85rem;
}

.primary-btn {
  width: 100%;
  margin-top: 8px;
  padding: 12px 16px;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(79, 70, 229, 0.35);
  transition: transform .06s ease, filter .2s ease, opacity .2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.primary-btn:hover {
  filter: brightness(1.03);
}

.primary-btn:active {
  transform: translateY(1px);
}

.primary-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  filter: grayscale(0.2);
}

.btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.55);
  border-top-color: transparent;
  border-radius: 50%;
  display: none;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.is-loading .btn-spinner {
  display: inline-block;
}

.is-loading .btn-label {
  opacity: 0.85;
}

.auth-alt {
  text-align: center;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.global-error {
  margin-top: 12px;
  color: var(--danger);
  text-align: center;
  font-weight: 600;
  min-height: 1.2em;
}

.auth-footer {
  margin-top: 18px;
  color: var(--muted);
  text-align: center;
}

/* Accessibilità focus visibile */
:focus-visible {
  outline: 3px solid color-mix(in lab, var(--primary) 50%, white 50%);
  outline-offset: 2px;
  border-radius: 10px;
}

/* DASHBOARD STYLE */
.container {
  max-width: 800px;
  margin: 40px auto;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 28px;
  text-align: center;
  box-shadow: var(--shadow);
}

.container h2 {
  margin-top: 0;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--fg);
}

.container p {
  color: var(--muted);
  margin-bottom: 20px;
}

/* Buttons area */
.buttons,
.admin-buttons {
  margin: 20px 0;
}

.buttons p,
.admin-buttons p {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* Base button */
.button,
.button1,
.buttonHot {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  border: none;
}

/* Standard buttons */
.button {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: white;
  box-shadow: 0 8px 18px rgba(79, 70, 229, 0.35);
}

.button:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

/* Secondary buttons */
.button1 {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--card-border);
  color: var(--fg);
}

.button1:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Admin "Hot" buttons */
.buttonHot {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: #fff;
  box-shadow: 0 8px 18px rgba(220, 38, 38, 0.35);
}

.buttonHot:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.buttons h3 {
  margin: 16px 0 8px;
  font-size: 16px;
  font-weight: bold;
  color: #ccc;
  /* colore più chiaro */
  text-transform: uppercase;
}