/* Tessera — ritocchi brand sopra Bootstrap 5 (guest login) */

:root {
  --tessera-ink: #0f1c24;
  --tessera-slate: #1a2f3a;
  --tessera-mist: #e8eef2;
  --tessera-accent: #2a9d8f;
  --tessera-accent-hover: #238b7f;
  --tessera-card: rgba(255, 255, 255, 0.94);
  --tessera-font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

html:has(body.tessera-guest),
html:has(.tessera-login) {
  min-height: 100%;
}

body.tessera-guest,
body.mod-bg-1.tessera-guest,
body.mod-bg-1:has(.tessera-login),
body:has(.tessera-login) {
  margin: 0;
  min-height: 100vh;
  background: var(--tessera-ink) !important;
  background-image: none !important;
  font-family: var(--tessera-font);
  color: var(--tessera-mist);
}

.tessera-login {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem 2.5rem;
  overflow: hidden;
  font-family: var(--tessera-font);
}

.tessera-login__atmosphere {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(15, 107, 92, 0.32), transparent 55%),
    radial-gradient(ellipse 70% 50% at 90% 80%, rgba(196, 92, 38, 0.28), transparent 50%),
    linear-gradient(165deg, var(--tessera-ink) 0%, var(--tessera-slate) 48%, #0c161c 100%);
  z-index: 0;
}

.tessera-login__atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 75%);
}

.tessera-login__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  display: block;
}

.tessera-login__stage {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 26rem;
}

.tessera-login__brand {
  text-align: center;
  margin-bottom: 1.75rem;
  color: var(--tessera-mist);
}

.tessera-login__mark {
  margin: 0;
  font-family: var(--tessera-font);
  font-size: clamp(2.75rem, 10vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: #fff;
}

.tessera-login__tagline {
  margin: 0.65rem 0 0;
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: rgba(232, 238, 242, 0.82);
}

.tessera-login__card {
  background: var(--tessera-card);
  border-radius: 1rem;
}

.tessera-login-form .form-label {
  font-weight: 600;
  color: #1a2f3a;
}

.tessera-login-form .form-control {
  border-color: #c5d0d6;
}

.tessera-login-form .form-control:focus {
  border-color: var(--tessera-accent);
  box-shadow: 0 0 0 0.2rem rgba(42, 157, 143, 0.25);
}

.tessera-login-form__submit.btn-primary {
  --bs-btn-bg: var(--tessera-accent);
  --bs-btn-border-color: var(--tessera-accent);
  --bs-btn-hover-bg: var(--tessera-accent-hover);
  --bs-btn-hover-border-color: var(--tessera-accent-hover);
  --bs-btn-active-bg: var(--tessera-accent-hover);
  --bs-btn-active-border-color: var(--tessera-accent-hover);
  font-weight: 600;
}

.tessera-login-form__forgot:hover {
  color: var(--tessera-accent) !important;
  text-decoration: underline !important;
}

@media (max-width: 575.98px) {
  .tessera-login {
    align-items: flex-start;
    padding-top: 2.5rem;
  }

  .tessera-login__card .card-body {
    padding: 1.5rem !important;
  }
}