.login-page {
  min-height: 100vh;
  background: var(--bg);
  overflow: hidden;
}

.login-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}

.login-panel--left {
  background: var(--ink);
  color: #fff;
  padding: 40px 52px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.login-panel--left::before {
  content: '';
  position: absolute;
  top: -140px;
  right: -140px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,109,255,.18) 0%, transparent 68%);
  pointer-events: none;
}

.login-panel--left::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -80px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,109,255,.09) 0%, transparent 70%);
  pointer-events: none;
}

.back-home {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  text-decoration: none;
  color: rgba(255,255,255,.45);
  font-size: .85rem;
  font-weight: 500;
  transition: color .18s;
  position: relative;
  z-index: 2;
  width: fit-content;
}

.back-home:hover { color: rgba(255,255,255,.85); }

.panel-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  z-index: 2;
  padding: 40px 0 20px;
}

.panel-quote-mark {
  font-family: 'DM Serif Display', serif;
  font-size: 7rem;
  line-height: .7;
  color: rgba(26,109,255,.35);
  margin-bottom: 8px;
  animation: fadeUp .6s ease both;
}

.panel-quote {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(1.7rem, 2.4vw, 2.4rem);
  line-height: 1.2;
  font-weight: 400;
  color: #fff;
  margin-bottom: 18px;
  animation: fadeUp .65s .08s ease both;
}

.panel-quote em {
  font-style: italic;
  color: #6eb8ff;
}

.panel-sub {
  font-size: .97rem;
  color: rgba(255,255,255,.5);
  line-height: 1.7;
  max-width: 38ch;
  font-weight: 300;
  margin-bottom: 36px;
  animation: fadeUp .65s .16s ease both;
}

.preview-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 20px;
  padding: 18px 20px;
  backdrop-filter: blur(8px);
  animation: fadeUp .7s .24s ease both;
  max-width: 360px;
}

.preview-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.preview-card__title {
  font-weight: 700;
  font-size: .92rem;
  color: #fff;
}

.preview-card__badge {
  font-size: .72rem;
  font-weight: 700;
  background: rgba(26,109,255,.20);
  color: #6eb8ff;
  padding: 3px 10px;
  border-radius: 999px;
}

.preview-task {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 10px;
  font-size: .84rem;
  font-weight: 500;
  color: rgba(255,255,255,.75);
  margin-bottom: 6px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.06);
  transition: background .2s;
}

.preview-task--done {
  opacity: .42;
  text-decoration: line-through;
}

.preview-task__check {
  width: 17px;
  height: 17px;
  border-radius: 5px;
  border: 1.5px solid rgba(26,109,255,.4);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .6rem;
  color: #fff;
}

.preview-task__check.done {
  background: var(--blue);
  border-color: var(--blue);
}

.preview-tag {
  margin-left: auto;
  font-size: .68rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  flex-shrink: 0;
}

.preview-tag--math { background: rgba(26,109,255,.18);  color: #6eb8ff; }
.preview-tag--eng  { background: rgba(34,197,94,.14);   color: #4ade80; }
.preview-tag--sci  { background: rgba(245,158,11,.14);  color: #fbbf24; }

.preview-progress {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,.07);
}

.preview-progress__bar {
  flex: 1;
  height: 5px;
  background: rgba(255,255,255,.10);
  border-radius: 999px;
  overflow: hidden;
}

.preview-progress__fill {
  height: 100%;
  width: 33%;
  background: linear-gradient(90deg, #1a6dff, #6eb8ff);
  border-radius: 999px;
  animation: grow 1.2s .9s ease both;
  transform-origin: left;
}

.preview-progress__label {
  font-size: .75rem;
  color: rgba(255,255,255,.35);
  white-space: nowrap;
  font-weight: 500;
}

.login-panel--right {
  background: var(--card);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 48px;
  position: relative;
}

.login-panel--right::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(7,17,31,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7,17,31,.028) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.login-form-wrap {
  width: 100%;
  max-width: 400px;
  position: relative;
  z-index: 1;
  animation: fadeIn .7s .1s ease both;
}

.login-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  color: var(--ink);
  margin-bottom: 36px;
}

.login-brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--bg2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.login-brand__mark img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.login-brand__name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -.01em;
}

.login-title {
  font-family: 'DM Serif Display', serif;
  font-size: 2.4rem;
  letter-spacing: -.03em;
  line-height: 1.1;
  color: var(--ink);
  margin-bottom: 8px;
}

.login-subtitle {
  font-size: .97rem;
  color: var(--ink2);
  font-weight: 300;
  margin-bottom: 28px;
}

.login-alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(239,68,68,.07);
  border: 1px solid rgba(239,68,68,.20);
  color: #b91c1c;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: .88rem;
  margin-bottom: 22px;
}

.login-alert svg { flex-shrink: 0; margin-top: 1px; }

.login-alert ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.login-label {
  font-size: .84rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: .01em;
}

.login-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.login-forgot {
  font-size: .82rem;
  font-weight: 500;
  color: var(--blue);
  text-decoration: none;
  transition: color .18s;
}

.login-forgot:hover { color: var(--blue2); }

.login-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--ink);
  font-family: inherit;
  font-size: .97rem;
  transition: border-color .2s, box-shadow .2s, background .2s;
  outline: none;
}

.login-input::placeholder { color: rgba(7,17,31,.35); }

.login-input:focus {
  border-color: var(--blue);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(26,109,255,.10);
}

.login-input-wrap {
  position: relative;
}

.login-input-wrap .login-input {
  padding-right: 46px;
}

.pw-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ink2);
  display: flex;
  align-items: center;
  padding: 4px;
  border-radius: 6px;
  transition: color .18s, background .18s;
}

.pw-toggle:hover { color: var(--ink); background: rgba(7,17,31,.05); }

.login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 13px 20px;
  border-radius: 14px;
  border: none;
  background: var(--blue);
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(26,109,255,.30);
  transition: background .2s, transform .18s, box-shadow .2s;
  margin-top: 4px;
}

.login-btn:hover {
  background: var(--blue2);
  transform: translateY(-1px);
  box-shadow: 0 14px 34px rgba(26,109,255,.38);
}

.login-btn:active {
  transform: translateY(0);
}

.login-switch {
  text-align: center;
  font-size: .88rem;
  color: var(--ink2);
  margin-top: 4px;
}

.login-switch a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 600;
  transition: color .18s;
}

.login-switch a:hover { color: var(--blue2); }

@media (max-width: 860px) {
  .login-split {
    grid-template-columns: 1fr;
    min-height: 100vh;
  }

  .login-panel--left {
    padding: 32px 28px 36px;
    min-height: unset;
  }

  .login-panel--left::before,
  .login-panel--left::after { display: none; }

  .panel-quote-mark { font-size: 4rem; }

  .panel-quote { font-size: 1.5rem; }

  .preview-card { max-width: 100%; }

  .login-panel--right {
    padding: 40px 24px 56px;
    align-items: flex-start;
  }

  .login-form-wrap { max-width: 100%; }
}

@media (max-width: 480px) {
  .login-title { font-size: 1.9rem; }
  .login-panel--left { padding: 24px 20px 28px; }
  .login-panel--right { padding: 32px 20px 48px; }
}