/* LightSchool — trang đăng nhập (Account/Login) */

.ls-login-page {
  position: relative;
  --ls-brand: #0284c7;
  --ls-brand-dark: #075985;
  --ls-navy: #0b1a2e;
  --ls-ocean: #0369a1;
  --ls-sky: #38bdf8;
}

.ls-login-card {
  position: relative;
  z-index: 1;
  width: min(960px, 96vw);
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: 22px;
  box-shadow: var(--admin-shadow-lg);
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  overflow: hidden;
}

/* ---------- Left: brand panel (geometric, navy → ocean blue) ---------- */

.ls-login-left {
  position: relative;
  padding: 2.5rem 2.25rem 2rem;
  background:
    linear-gradient(155deg, var(--ls-navy) 0%, var(--ls-ocean) 78%, #0891b2 120%);
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1.6px),
    linear-gradient(155deg, var(--ls-navy) 0%, var(--ls-ocean) 78%, #0891b2 120%);
  background-size: 22px 22px, auto;
  display: flex;
  flex-direction: column;
  min-height: 560px;
  overflow: hidden;
}

.ls-login-ring,
.ls-login-diamond {
  position: absolute;
  pointer-events: none;
  z-index: 0;
}

.ls-login-ring {
  top: -70px;
  right: -70px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 1.5px solid rgba(125, 211, 252, 0.35);
}

.ls-login-ring::before {
  content: "";
  position: absolute;
  inset: 34px;
  border-radius: 50%;
  border: 1px solid rgba(125, 211, 252, 0.2);
}

.ls-login-diamond {
  width: 84px;
  height: 84px;
  left: -30px;
  bottom: 130px;
  border: 1.5px solid rgba(56, 189, 248, 0.3);
  border-radius: 16px;
  transform: rotate(20deg);
}

.ls-login-brand {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
}

.ls-login-brand img {
  width: 100%;
  max-width: 190px;
  height: auto;
  display: block;
  filter: drop-shadow(0 2px 10px rgba(0, 0, 0, 0.35));
}

.ls-login-headline {
  position: relative;
  z-index: 1;
  margin-top: 1.9rem;
  font-weight: 800;
  line-height: 1.15;
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  letter-spacing: 0.2px;
}

.ls-login-headline .l1 {
  color: var(--ls-sky);
}

.ls-login-headline .l2 {
  color: #f8fafc;
}

.ls-login-tagline {
  position: relative;
  z-index: 1;
  margin-top: 0.7rem;
  color: rgba(226, 240, 253, 0.72);
  font-size: 0.96rem;
  max-width: 32ch;
}

.ls-login-features {
  position: relative;
  z-index: 1;
  margin-top: auto;
  padding-top: 2rem;
  display: grid;
  gap: 0.85rem;
}

.ls-login-feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(148, 210, 240, 0.18);
  backdrop-filter: blur(6px);
}

.ls-login-feature .icon {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--ls-sky), var(--ls-brand-dark));
  font-size: 1.05rem;
}

.ls-login-feature .text strong {
  display: block;
  font-size: 0.9rem;
  color: #f1f9ff;
}

.ls-login-feature .text small {
  color: rgba(226, 240, 253, 0.65);
  font-size: 0.8rem;
}

/* ---------- Right: form panel ---------- */

.ls-login-right {
  padding: 2.75rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.ls-login-eyebrow {
  color: var(--ls-brand, #0284c7);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.ls-login-right h1 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--admin-text);
}

.ls-login-right .ls-login-sub {
  color: var(--admin-muted);
}

.ls-login-right .form-control {
  border-radius: 10px;
  padding: 0.72rem 1rem;
  border-color: var(--admin-border);
}

.ls-login-right .form-control:focus {
  border-color: var(--ls-brand, #0284c7);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.16);
}

.ls-login-right .input-group .form-control {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.ls-login-right .input-group .btn-outline-secondary {
  border-radius: 0 10px 10px 0;
  border-color: var(--admin-border);
  color: var(--admin-muted);
}

.ls-login-right label.form-label {
  font-weight: 600;
  color: var(--admin-text);
  font-size: 0.92rem;
}

.ls-login-right .forgot-link {
  color: var(--ls-brand-dark, #075985);
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
}

.ls-login-right .forgot-link:hover {
  text-decoration: underline;
}

html[data-theme="dark"] .ls-login-right .forgot-link {
  color: var(--ls-sky, #38bdf8);
}

.btn-ls-login {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--ls-sky), var(--ls-ocean));
  color: #fff;
  font-weight: 700;
  font-size: 0.98rem;
  box-shadow: 0 12px 22px -10px rgba(3, 105, 161, 0.55);
  transition: filter 0.15s ease;
}

.btn-ls-login:hover,
.btn-ls-login:focus {
  filter: brightness(1.08);
  color: #fff;
}

.btn-ls-login:disabled {
  opacity: 0.75;
}

@media (max-width: 860px) {
  .ls-login-card {
    grid-template-columns: 1fr;
  }

  .ls-login-left {
    min-height: auto;
    padding: 2rem 1.5rem 1.5rem;
  }

  .ls-login-features {
    padding-top: 1.5rem;
  }

  .ls-login-right {
    padding: 2rem 1.5rem 2.25rem;
  }
}