:root {
  --ink: #10202b;
  --muted: #667784;
  --line: #d7e1e7;
  --paper: #ffffff;
  --wash: #edf4f6;
  --teal: #156f82;
  --teal-deep: #102f46;
  --amber: #d69a31;
  --coral: #c85b4a;
  --green: #207a55;
  --shadow: 0 28px 80px rgb(16 32 43 / 0.16);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  font-family:
    "Aptos", "Segoe UI", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--wash);
}

button,
input {
  font: inherit;
}

.page {
  display: none;
}

.page-active {
  display: block;
}

.login-ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(140deg, rgb(21 111 130 / 0.16), transparent 34%),
    linear-gradient(310deg, rgb(214 154 49 / 0.16), transparent 38%),
    radial-gradient(circle at 50% 0%, rgb(16 47 70 / 0.14), transparent 32%),
    var(--wash);
}

.login-ambient::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgb(16 32 43 / 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgb(16 32 43 / 0.045) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, rgb(0 0 0 / 0.9), transparent 82%);
}

.login-container {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}

.login-card,
.dashboard-shell {
  border: 1px solid rgb(215 225 231 / 0.92);
  border-radius: 8px;
  background: rgb(255 255 255 / 0.9);
  box-shadow: var(--shadow);
}

.compact-login-card {
  width: min(100%, 410px);
  padding: clamp(24px, 6vw, 34px);
  backdrop-filter: blur(18px);
}

.brand-chip {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--teal-deep), var(--teal));
  color: #fff;
  font-weight: 950;
  box-shadow: 0 14px 28px rgb(21 111 130 / 0.24);
}

.kicker {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.login-header {
  margin-bottom: 28px;
}

.section-title,
.dashboard-title {
  letter-spacing: 0;
  line-height: 1.05;
}

.section-title {
  font-size: clamp(2.05rem, 9vw, 2.75rem);
  font-weight: 950;
}

.login-form {
  display: grid;
  gap: 18px;
}

.field-group {
  display: grid;
  gap: 8px;
}

.field-label {
  color: var(--teal-deep);
  font-size: 0.9rem;
  font-weight: 850;
}

.form-control {
  min-height: 56px;
  border: 1px solid #cbd8df;
  border-radius: 8px;
  padding-inline: 16px;
  color: var(--ink);
  background: #fbfdfe;
}

.form-control::placeholder {
  color: #8b99a3;
}

.form-control:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 0.22rem rgb(21 111 130 / 0.14);
}

.password-wrap {
  position: relative;
}

.password-wrap .form-control {
  padding-right: 58px;
}

.field-icon-btn,
.secondary-action {
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7fbfc;
  color: var(--teal-deep);
}

.field-icon-btn {
  position: absolute;
  top: 50%;
  right: 8px;
  width: 42px;
  height: 42px;
  transform: translateY(-50%);
}

.captcha-frame {
  display: grid;
  min-height: 64px;
  place-items: center;
  overflow: hidden;
  padding: 8px 12px;
  border: 1px solid #cbd8df;
  border-radius: 8px;
  background: #f7fbfc;
  color: var(--muted);
}

.captcha-frame img {
  display: block;
  max-width: 100%;
  max-height: 64px;
}

.primary-action,
.secondary-action {
  min-height: 52px;
  font-weight: 900;
}

.primary-action {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  margin-top: 4px;
  background: linear-gradient(135deg, var(--teal), var(--teal-deep));
  color: #fff;
  box-shadow: 0 16px 34px rgb(21 111 130 / 0.22);
}

.primary-action:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.alert-stack {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.app-alert {
  margin: 0;
  border-radius: 8px;
  font-weight: 750;
}

.login-loading {
  min-height: 314px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 16px;
  text-align: center;
}

.login-loading h2 {
  margin: 4px 0 0;
  color: var(--teal-deep);
  font-size: 1.55rem;
  font-weight: 950;
  letter-spacing: 0;
}

.login-loading p {
  max-width: 260px;
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.android-loader {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background:
    conic-gradient(from 0deg, var(--teal) 0 78deg, transparent 78deg 360deg),
    conic-gradient(from 120deg, var(--amber) 0 64deg, transparent 64deg 360deg),
    conic-gradient(from 235deg, var(--coral) 0 52deg, transparent 52deg 360deg);
  animation: android-spin 1.05s linear infinite;
  filter: drop-shadow(0 14px 18px rgb(16 47 70 / 0.16));
  -webkit-mask: radial-gradient(circle, transparent 52%, #000 54%);
  mask: radial-gradient(circle, transparent 52%, #000 54%);
}

@keyframes android-spin {
  to {
    transform: rotate(360deg);
  }
}

.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: "";
  width: 18px;
  height: 18px;
  margin-left: 8px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 999px;
  animation: android-spin 0.75s linear infinite;
}

.dashboard-shell {
  padding: clamp(18px, 4vw, 34px);
}

.dashboard-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.dashboard-title {
  font-size: clamp(1.8rem, 7vw, 3.3rem);
  font-weight: 950;
}

.dashboard-status {
  margin-bottom: 18px;
}

.secondary-action {
  grid-auto-flow: column;
  gap: 8px;
  padding: 0 16px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.data-card {
  min-height: 132px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
}

.data-card p,
.data-card strong,
.data-card span {
  display: block;
}

.data-card p {
  margin: 0 0 10px;
  color: var(--muted);
  font-weight: 850;
}

.data-card strong {
  color: var(--teal-deep);
  font-size: 1.42rem;
  line-height: 1.15;
}

.data-card span {
  margin-top: 8px;
  color: var(--muted);
}

.raw-preview {
  margin-top: 18px;
}

.raw-preview summary {
  cursor: pointer;
  color: var(--teal-deep);
  font-weight: 900;
}

.raw-preview pre {
  max-height: 280px;
  margin-top: 10px;
  overflow: auto;
  padding: 14px;
  border-radius: 8px;
  background: #10202b;
  color: #eff7fb;
  white-space: pre-wrap;
}

.timetable-grid {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.timetable-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.timetable-table th {
  padding: 11px 14px;
  color: #fff;
  background: var(--teal-deep);
  text-align: center;
  font-weight: 850;
  letter-spacing: 0;
  white-space: nowrap;
}

.timetable-table td {
  min-width: 104px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  color: var(--ink);
  text-align: center;
  vertical-align: middle;
}

.timetable-table tr:nth-child(even) td {
  background: #f6fafb;
}

.timetable-table td.time-cell {
  color: var(--teal-deep);
  background: #eef5f7;
  font-weight: 850;
  text-align: left;
  white-space: nowrap;
}

.timetable-table td.subject-cell:not(:empty):hover {
  background: rgb(21 111 130 / 0.08);
}

.timetable-table td.empty-cell {
  color: #aeb9c0;
}

.timetable-empty {
  padding: 3rem 1rem;
  color: var(--muted);
  text-align: center;
}

.timetable-empty .empty-icon {
  display: inline-grid;
  width: 52px;
  height: 52px;
  place-items: center;
  margin-bottom: 1rem;
  border-radius: 8px;
  background: #eef5f7;
  color: var(--teal-deep);
  font-weight: 950;
}

.timetable-empty p {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

@media (max-width: 767.98px) {
  .login-container {
    align-items: center;
    padding: 16px;
  }

  .compact-login-card {
    padding: 24px 18px;
  }

  .login-loading {
    min-height: 280px;
  }

  .dashboard-header {
    align-items: stretch;
    flex-direction: column;
  }

  .secondary-action {
    width: 100%;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }
}