/* =============================================================
   LOGIN — uses the project's design tokens (--f-*).
   Calm canvas, signature accents, soft motion. RTL-first.
   ============================================================= */

.lg-shell {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
  background: var(--f-bg);
  color: var(--f-ink);
  font-family: var(--f-arab);
  overflow: hidden;
}

/* ---- atmospheric background (matches the home f-body::before language) ---- */
.lg-bg {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
}
.lg-bg__pool {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
}
.lg-bg__pool--a {
  width: 520px; height: 520px;
  top: -120px; inset-inline-end: -120px;
  background: radial-gradient(circle, var(--f-navy) 0%, transparent 70%);
  opacity: 0.18;
}
.lg-bg__pool--b {
  width: 460px; height: 460px;
  bottom: -100px; inset-inline-start: -100px;
  background: radial-gradient(circle, var(--f-gold) 0%, transparent 70%);
  opacity: 0.12;
}
.lg-bg__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--f-ink) 4%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--f-ink) 4%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 90%);
}
.f-body.dark .lg-bg__pool--a { opacity: 0.35; }
.f-body.dark .lg-bg__pool--b { opacity: 0.22; }

/* ---- card ---- */
.lg-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  background: var(--f-surface);
  border: 1px solid var(--f-border);
  border-radius: var(--f-r-lg);
  box-shadow: var(--f-shadow-md);
  overflow: hidden;
  animation: lg-rise 380ms var(--f-spring);
}
@keyframes lg-rise {
  from { opacity: 0; transform: translateY(8px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0)    scale(1); }
}

.lg-card__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 22px 26px 0;
}
.lg-card__mark {
  width: 44px; height: 44px;
  border-radius: var(--f-r-sm);
  background: var(--f-surface-2);
  border: 1px solid var(--f-border);
  display: grid; place-items: center;
  overflow: hidden;
}
.lg-card__mark img {
  width: 70%; height: 70%; object-fit: contain;
}
.lg-card__brand-txt {
  display: flex; flex-direction: column;
  line-height: 1.2;
}
.lg-card__brand-txt strong {
  font-family: var(--f-disp);
  font-size: 1rem;
  font-weight: 700;
  color: var(--f-ink);
}
.lg-card__brand-txt small {
  font-size: 0.78rem;
  color: var(--f-ink-3);
}

.lg-card__head {
  padding: 18px 26px 0;
}
.lg-card__head h1 {
  font-family: var(--f-disp);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--f-ink);
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.lg-card__head h1::after {
  content: '';
  display: block;
  width: 36px; height: 2px;
  background: var(--f-navy);
  margin-top: 8px;
  border-radius: 1px;
}
.f-body.dark .lg-card__head h1::after { background: var(--f-cs); }
.lg-card__head p {
  margin: 8px 0 0;
  color: var(--f-ink-2);
  font-size: 0.92rem;
}

/* first-run helper ribbon */
.lg-hint {
  margin: 18px 26px 0;
  padding: 12px 14px;
  background: color-mix(in srgb, var(--f-gold) 12%, var(--f-surface));
  border: 1px solid color-mix(in srgb, var(--f-gold) 30%, var(--f-border));
  border-radius: var(--f-r);
  display: flex; gap: 12px;
  align-items: flex-start;
  font-size: 0.85rem;
}
.lg-hint .material-symbols-outlined {
  color: var(--f-gold);
  font-size: 22px;
  flex-shrink: 0;
  margin-top: 1px;
}
.lg-hint strong {
  display: block;
  color: var(--f-ink);
  font-weight: 700;
  margin-bottom: 3px;
}
.lg-hint small {
  display: block;
  color: var(--f-ink-2);
  line-height: 1.6;
}
.lg-hint code {
  font-family: var(--f-mono);
  font-size: 0.84rem;
  background: var(--f-surface-2);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--f-navy);
  margin: 0 4px;
}
.f-body.dark .lg-hint code { color: var(--f-cs); }

/* ---- form ---- */
.lg-form {
  padding: 22px 26px 8px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.lg-field {
  display: flex; flex-direction: column;
  gap: 6px;
}
.lg-field__lbl {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--f-ink-2);
}
.lg-field__wrap {
  display: flex;
  align-items: center;
  background: var(--f-bg-2);
  border: 1px solid var(--f-border);
  border-radius: var(--f-r);
  padding: 4px 6px 4px 4px;
  transition: border-color var(--f-dur) var(--f-ease),
              box-shadow   var(--f-dur) var(--f-ease),
              background   var(--f-dur);
}
.lg-field__wrap:focus-within {
  border-color: var(--f-navy);
  background: var(--f-surface);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--f-navy) 12%, transparent);
}
.f-body.dark .lg-field__wrap:focus-within {
  border-color: var(--f-cs);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--f-cs) 22%, transparent);
}
.lg-field__ico {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  color: var(--f-ink-3);
  flex-shrink: 0;
}
.lg-field__ico .material-symbols-outlined { font-size: 20px; }
.lg-field__wrap:focus-within .lg-field__ico { color: var(--f-navy); }
.f-body.dark .lg-field__wrap:focus-within .lg-field__ico { color: var(--f-cs); }
.lg-field input {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 10px 4px;
  font-family: var(--f-arab);
  font-size: 0.95rem;
  color: var(--f-ink);
  outline: none;
  min-width: 0;
}
.lg-field input::placeholder { color: var(--f-ink-3); }
.lg-field input:disabled { opacity: 0.55; cursor: not-allowed; }

.lg-field__action {
  width: 36px; height: 36px;
  border-radius: var(--f-r-sm);
  border: 0;
  background: transparent;
  color: var(--f-ink-3);
  cursor: pointer;
  display: grid; place-items: center;
  flex-shrink: 0;
  transition: color var(--f-dur), background var(--f-dur);
}
.lg-field__action:hover {
  color: var(--f-ink);
  background: var(--f-surface-2);
}
.lg-field__action .material-symbols-outlined { font-size: 19px; }

/* ---- options row ---- */
.lg-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 2px;
  flex-wrap: wrap;
}
.lg-check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
  font-size: 0.86rem;
  color: var(--f-ink-2);
}
.lg-check input { display: none; }
.lg-check__box {
  width: 18px; height: 18px;
  border-radius: var(--f-r-xs);
  border: 1.5px solid var(--f-border-2);
  background: var(--f-bg-2);
  display: grid; place-items: center;
  transition: color var(--f-dur),
              background-color var(--f-dur),
              border-color var(--f-dur),
              box-shadow var(--f-dur),
              transform var(--f-dur),
              opacity var(--f-dur);
}
.lg-check input:checked ~ .lg-check__box {
  background: var(--f-navy);
  border-color: var(--f-navy);
  color: #fff;
}
.f-body.dark .lg-check input:checked ~ .lg-check__box {
  background: var(--f-cs);
  border-color: var(--f-cs);
}
.lg-check__box .material-symbols-outlined { font-size: 14px; color: #fff; font-weight: 700; }
.lg-link {
  background: transparent;
  border: 0;
  padding: 4px 6px;
  font-family: var(--f-arab);
  font-size: 0.84rem;
  color: var(--f-navy);
  cursor: pointer;
  font-weight: 600;
  border-radius: var(--f-r-sm);
  transition: background var(--f-dur);
}
.lg-link:hover { background: color-mix(in srgb, var(--f-navy) 8%, transparent); }
.f-body.dark .lg-link { color: var(--f-cs); }
.f-body.dark .lg-link:hover { background: color-mix(in srgb, var(--f-cs) 12%, transparent); }

/* ---- alert ---- */
.lg-alert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--f-r);
  font-size: 0.86rem;
  font-weight: 500;
  animation: lg-shake 280ms var(--f-spring);
}
.lg-alert--err {
  background: color-mix(in srgb, var(--f-err) 9%, var(--f-surface));
  border: 1px solid color-mix(in srgb, var(--f-err) 30%, var(--f-border));
  color: var(--f-err);
}
.lg-alert--warn {
  background: color-mix(in srgb, var(--f-warn) 10%, var(--f-surface));
  border: 1px solid color-mix(in srgb, var(--f-warn) 30%, var(--f-border));
  color: var(--f-warn);
}
.lg-alert .material-symbols-outlined { font-size: 20px; flex-shrink: 0; }
@keyframes lg-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* ---- submit ---- */
.lg-submit {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  border: 0;
  border-radius: var(--f-r);
  background: var(--f-navy);
  color: #fff;
  font-family: var(--f-arab);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--f-dur) var(--f-ease),
              background-color var(--f-dur) var(--f-ease),
              border-color var(--f-dur) var(--f-ease),
              box-shadow var(--f-dur) var(--f-ease),
              transform var(--f-dur) var(--f-ease),
              opacity var(--f-dur) var(--f-ease);
  margin-top: 6px;
  box-shadow: var(--f-shadow-sm);
}
.lg-submit:hover:not(:disabled) {
  background: var(--f-navy-soft);
  transform: translateY(-1px);
  box-shadow: var(--f-shadow);
}
.lg-submit:active:not(:disabled) { transform: translateY(0); }
.lg-submit:disabled { opacity: 0.65; cursor: not-allowed; }
.lg-submit .material-symbols-outlined {
  font-size: 18px;
  transition: transform var(--f-dur) var(--f-ease);
}
.lg-submit:hover:not(:disabled) .material-symbols-outlined { transform: translateX(-3px); }
.f-body.dark .lg-submit { background: var(--f-cs); color: #0b1020; }
.f-body.dark .lg-submit:hover:not(:disabled) { background: color-mix(in srgb, var(--f-cs) 80%, white); }

.lg-submit__spin {
  width: 16px; height: 16px;
  border: 2px solid color-mix(in srgb, #fff 35%, transparent);
  border-top-color: #fff;
  border-radius: 50%;
  animation: lg-spin 0.8s linear infinite;
}
@keyframes lg-spin { to { transform: rotate(360deg); } }

/* ---- footer ---- */
.lg-card__foot {
  margin-top: 18px;
  padding: 14px 26px;
  border-top: 1px solid var(--f-border);
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  font-size: 0.76rem;
  color: var(--f-ink-3);
  background: var(--f-surface-2);
}
.lg-card__foot-l {
  display: inline-flex; align-items: center; gap: 6px;
}
.lg-card__foot-l .material-symbols-outlined { font-size: 14px; color: var(--f-ok); }

/* ---- password strength ---- */
.lg-strength {
  display: flex; flex-direction: column; gap: 6px;
  padding: 8px 2px;
}
.lg-strength__bar {
  display: flex; gap: 4px;
}
.lg-strength__bar span {
  flex: 1; height: 4px;
  background: var(--f-border);
  border-radius: 2px;
  transition: background var(--f-dur);
}
.lg-strength[data-score="1"] .lg-strength__bar span.on { background: var(--f-err); }
.lg-strength[data-score="2"] .lg-strength__bar span.on { background: var(--f-warn); }
.lg-strength[data-score="3"] .lg-strength__bar span.on { background: var(--f-gold); }
.lg-strength[data-score="4"] .lg-strength__bar span.on { background: var(--f-ok); }
.lg-strength small {
  font-size: 0.78rem; color: var(--f-ink-3);
}
.lg-strength small b { color: var(--f-ink); }

/* ---- forgot password modal ---- */
.lg-modal {
  position: fixed; inset: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--f-ink) 35%, transparent);
  backdrop-filter: blur(6px);
  display: grid; place-items: center;
  padding: 24px;
  animation: lg-fade 200ms ease-out;
}
@keyframes lg-fade { from { opacity: 0; } to { opacity: 1; } }
.lg-modal__sheet {
  background: var(--f-surface);
  border: 1px solid var(--f-border);
  border-radius: var(--f-r-lg);
  box-shadow: var(--f-shadow-md);
  width: 100%;
  max-width: 440px;
  animation: lg-rise 280ms var(--f-spring);
}
.lg-modal__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 22px 24px 16px;
  border-bottom: 1px solid var(--f-border);
}
.lg-modal__head > .material-symbols-outlined {
  width: 40px; height: 40px;
  border-radius: var(--f-r-sm);
  background: color-mix(in srgb, var(--f-navy) 10%, transparent);
  color: var(--f-navy);
  display: grid; place-items: center;
  font-size: 22px !important;
  flex-shrink: 0;
}
.f-body.dark .lg-modal__head > .material-symbols-outlined {
  background: color-mix(in srgb, var(--f-cs) 16%, transparent);
  color: var(--f-cs);
}
.lg-modal__head > div { flex: 1; }
.lg-modal__head h3 {
  font-family: var(--f-disp);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--f-ink);
  margin: 2px 0 4px;
}
.lg-modal__head p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--f-ink-2);
}
.lg-modal__close {
  width: 32px; height: 32px;
  border-radius: var(--f-r-sm);
  border: 0;
  background: transparent;
  color: var(--f-ink-3);
  cursor: pointer;
  display: grid; place-items: center;
  transition: color var(--f-dur),
              background-color var(--f-dur),
              border-color var(--f-dur),
              box-shadow var(--f-dur),
              transform var(--f-dur),
              opacity var(--f-dur);
}
.lg-modal__close:hover { background: var(--f-surface-2); color: var(--f-ink); }
.lg-modal__note {
  font-size: 0.82rem;
  color: var(--f-ink-3);
  line-height: 1.6;
  margin: -4px 0 8px;
}
.lg-modal__done {
  padding: 32px 24px;
  text-align: center;
}
.lg-modal__done > .material-symbols-outlined {
  font-size: 56px;
  color: var(--f-ok);
  margin-bottom: 8px;
}
.lg-modal__done h4 {
  font-family: var(--f-disp);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--f-ink);
  margin: 0 0 6px;
}
.lg-modal__done p {
  margin: 0 0 18px;
  color: var(--f-ink-2);
  font-size: 0.88rem;
}

/* ---- responsive ---- */
@media (max-width: 480px) {
  .lg-card { max-width: 100%; border-radius: var(--f-r-md); }
  .lg-card__head h1 { font-size: 1.4rem; }
  .lg-row { flex-direction: column; align-items: flex-start; }
}

/* ---- reduced motion: entrance/shake/fade off, loading spinner stays ---- */
@media (prefers-reduced-motion: reduce) {
  .lg-card, .lg-alert, .lg-modal, .lg-modal__sheet { animation: none !important; }
}