/* ============================================================
   PAGE: SESSIONS (Sign In)
   Full-screen gradient background with glassmorphic card.
   ============================================================ */

/* ---- Full-screen gradient background ---- */
.signin-bg {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--gradient-night);
}

/* Stars in the background use the shared .star class with the page-specific opacity */
.signin-bg .star {
  background: white;
}

/* ---- Glassmorphism card ---- */
.signin-card {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 420px;
  margin: 0 1.25rem;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-xl);
  padding: 2.75rem 2.5rem 2.5rem;
  box-shadow: 0 8px 40px rgba(5, 13, 46, 0.5);
}

/* ---- Balloon icon ---- */
.balloon-icon {
  text-align: center;
  font-size: 2.8rem;
  line-height: 1;
  margin-bottom: 0.75rem;
  animation: float 4s ease-in-out infinite;
}

/* ---- Heading ---- */
.signin-card h1 {
  margin: 0 0 0.35rem;
  color: var(--color-white);
  font-size: 1.85rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-align: center;
}

.signin-card .subtitle {
  margin: 0 0 2rem;
  color: rgba(255,255,255,0.65);
  font-size: 0.95rem;
  text-align: center;
}

/* ---- Form fields: glassmorphic variant for dark background ---- */
.field {
  margin-bottom: 1rem;
}

.field label {
  display: block;
  color: rgba(255,255,255,0.75);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
}

.field input {
  display: block;
  width: 100%;
  background: rgba(255,255,255,0.1);
  border: 1.5px solid rgba(255,255,255,0.2);
  border-radius: 14px;
  padding: 0.8rem 1rem;
  color: var(--color-white);
  font-size: 1rem;
  transition: border-color 0.2s, background 0.2s;
  outline: none;
}

.field input::placeholder { color: rgba(255,255,255,0.35); }

.field input:focus {
  border-color: var(--color-accent);
  background: rgba(255,255,255,0.14);
}

/* ---- Submit button: full-width variant ---- */
.signin-card .btn-primary {
  display: block;
  width: 100%;
  margin-top: 1.5rem;
  padding: 0.9rem 1.5rem;
  font-size: 1rem;
}

/* ---- Forgot password link ---- */
.signin-footer {
  margin-top: 1.25rem;
  text-align: center;
}

.signin-footer a {
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.2s;
}

.signin-footer a:hover { color: var(--color-accent); }