/* ==========================================================================
   librus-tui - AMOLED theme
   ========================================================================== */

:root {
  --bg: #000000;
  --bg-soft: #000000;
  --panel: #000000;
  --panel-raised: #0a0a0d;
  --panel-title: #0a0a0d;
  --accent: #7c9cff;
  --fg-bright: #f4f4f5;
  --accent-mid: #4f7cff;
  --dim: #8a8a94;
  --dimmer: #565660;
  --line: #26262c;
  --line-soft: #16161a;
  --amber: #fbbf24;
  --amber-dim: #7c5a12;
  --red: #fb7185;
  --red-dim: #7f1d2d;
  --cyan: #67e8f9;
  --violet: #c4b5fd;
  --black: #000000;
  --mono: "JetBrains Mono", "Cascadia Mono", "Cascadia Code", "Fira Code",
    "IBM Plex Mono", "Source Code Pro", ui-monospace, SFMono-Regular, Menlo,
    Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--bg);
  color: var(--fg-bright);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.45;
  font-variant-ligatures: none;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  padding: 0;
}

::selection {
  background: var(--accent);
  color: var(--black);
}

button,
input {
  font-family: inherit;
  font-size: inherit;
}

button {
  color: inherit;
}

.hidden {
  display: none !important;
}

.dim {
  color: var(--dim);
}

.accent {
  color: var(--amber);
}

/* ------------------------------------------------------------------ CRT chrome */

.crt {
  position: relative;
  height: 100%;
  max-width: 100%;
  margin: 0;
}

.crt-scanlines,
.crt-vignette,
.crt-flicker {
  display: none !important;
}

.terminal {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100dvh;
  min-height: 0;
  background: var(--bg);
  border: 0;
  box-shadow: none;
  overflow: hidden;
}

/* ------------------------------------------------------------------- titlebar */

.titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex: 0 0 29px;
  padding: 0 10px;
  background: #050508;
  border-bottom: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(124, 156, 255, 0.4);
  color: var(--fg-bright);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.4px;
}

.titlebar-name {
  color: var(--accent);
}

.titlebar-mark {
  color: var(--accent);
  font-size: 14px;
}

.titlebar-left,
.titlebar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  white-space: nowrap;
}

.titlebar-mark {
  font-size: 14px;
}

.titlebar-sep,
.titlebar-sub,
.titlebar-date {
  opacity: 0.66;
  font-weight: 500;
}

.titlebar-clock {
  font-variant-numeric: tabular-nums;
}

.titlebar-right {
  font-weight: 500;
  font-size: 11px;
}

.badge {
  display: inline-block;
  padding: 0 5px;
  border: 1px solid currentColor;
  font-size: 9.5px;
  line-height: 15px;
  letter-spacing: 1px;
  font-weight: 700;
}

.demo-badge {
  color: #3c2a00;
  background: var(--amber);
  border-color: #3c2a00;
}

.led {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #15151a;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5) inset;
}

.led.online {
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

.led.busy {
  background: var(--amber);
  animation: led-pulse 0.7s infinite alternate;
}

.led.offline {
  background: var(--red);
}

.badge {
  display: inline-block;
  padding: 0 5px;
  border: 1px solid currentColor;
  font-size: 9.5px;
  line-height: 15px;
  letter-spacing: 1px;
  font-weight: 700;
}

.demo-badge {
  color: #3c2a00;
  background: var(--amber);
  border-color: #3c2a00;
}

.led {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #15151a;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35) inset;
}

.led.online {
  background: var(--accent);
  box-shadow: 0 0 5px var(--accent);
}

.led.busy {
  background: var(--amber-dim);
  animation: led-pulse 0.7s infinite alternate;
}

.led.offline {
  background: var(--red-dim);
}

@keyframes led-pulse {
  from { opacity: 0.35; }
  to { opacity: 1; }
}

/* --------------------------------------------------------------------- screens */

.screen {
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}

.login-screen {
  display: flex;
  overflow: auto;
}

.login-wrap {
  width: min(780px, 100%);
  margin: auto;
  padding: 34px 22px 26px;
  text-align: center;
}

.logo {
  display: inline-block;
  margin: 0;
  color: var(--accent);
  font-size: clamp(7px, 1.25vw, 13.5px);
  line-height: 1.12;
  text-shadow:
    0 0 7px rgba(124, 156, 255, 0.55),
    0 0 24px rgba(124, 156, 255, 0.18);
  user-select: none;
}

.logo-accent {
  color: var(--amber);
  text-shadow: 0 0 8px rgba(255, 206, 107, 0.6);
}

.logo-sub {
  margin: 8px 0 30px;
  color: var(--dim);
  font-size: 11px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
}

.login-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 16px;
  text-align: left;
}

.login-box,
.bootlog-wrap {
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.72);
  padding: 12px 14px 14px;
  box-shadow: 0 0 18px rgba(0, 0, 0, 0.35) inset;
}

.box-rule {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--dim);
  font-size: 9.5px;
  letter-spacing: 2px;
}

.box-rule::before,
.box-rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line-soft);
}

.field {
  display: block;
  margin-bottom: 13px;
}

.field-label {
  display: block;
  margin-bottom: 4px;
  color: var(--dim);
  font-size: 10px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
}

.field-input-wrap {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 8px;
  background: #000000;
  border: 1px solid var(--line);
  transition: border-color 0.12s, box-shadow 0.12s;
}

.field-input-wrap:focus-within {
  border-color: var(--accent-mid);
  box-shadow: 0 0 0 1px rgba(124, 156, 255, 0.12), 0 0 14px rgba(124, 156, 255, 0.1) inset;
}

.field-prompt {
  color: var(--accent-mid);
}

.field input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--fg-bright);
  caret-color: var(--accent);
}

.field input::placeholder {
  color: #565660;
}

.btn {
  display: inline-block;
  padding: 7px 11px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.5px;
  cursor: pointer;
  text-align: center;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}

.btn:hover,
.btn:focus-visible {
  background: rgba(124, 156, 255, 0.12);
  border-color: var(--accent-mid);
  color: var(--fg-bright);
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: wait;
}

.btn-primary {
  width: 100%;
  margin-top: 4px;
  border-color: var(--accent-mid);
  background: rgba(124, 156, 255, 0.08);
  color: var(--fg-bright);
  text-transform: uppercase;
  letter-spacing: 1.6px;
  font-size: 11px;
}

.login-alt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.login-note {
  color: var(--dimmer);
  font-size: 9.5px;
  letter-spacing: 0.8px;
}

#demo-btn {
  border-color: var(--amber-dim);
  color: var(--amber);
  font-size: 11px;
}

#demo-btn:hover {
  background: rgba(255, 206, 107, 0.1);
  border-color: var(--amber);
}

.bootlog-wrap {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.bootlog {
  flex: 1;
  margin: 0;
  min-height: 142px;
  max-height: 230px;
  overflow: auto;
  color: var(--dim);
  font-family: inherit;
  font-size: 11px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}

.bootlog .ok { color: var(--accent); }
.bootlog .err { color: var(--red); }
.bootlog .info { color: var(--cyan); }
.bootlog .warn { color: var(--amber); }
.bootlog .cmd { color: var(--fg-bright); }

.login-hint {
  margin: 18px 0 0;
  color: var(--dimmer);
  font-size: 10px;
  line-height: 1.6;
}

/* ------------------------------------------------------------------- app shell */

.app-screen {
  display: flex;
}

.app-grid {
  display: grid;
  grid-template-columns: 206px minmax(0, 1fr);
  width: 100%;
  height: 100%;
  min-height: 0;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-height: 0;
  padding: 10px 8px 8px;
  border-right: 1px solid var(--line-soft);
  background: rgba(0, 0, 0, 0.45);
  overflow-y: auto;
}

.side-head {
  padding: 0 8px 7px;
  color: var(--dimmer);
  font-size: 9px;
  letter-spacing: 2.2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 5px 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--dim);
  text-align: left;
  cursor: pointer;
  transition: background 0.1s, color 0.1s;
}

.nav-item:hover {
  color: var(--fg-bright);
  background: rgba(124, 156, 255, 0.06);
}

.nav-item.active {
  background: rgba(124, 156, 255, 0.14);
  border-color: rgba(124, 156, 255, 0.42);
  color: var(--fg-bright);
  font-weight: 700;
  box-shadow: inset 2px 0 0 var(--accent);
}

.nav-key {
  width: 13px;
  flex: 0 0 13px;
  color: var(--dimmer);
  font-size: 10.5px;
  text-align: center;
}

.nav-item.active .nav-key {
  color: var(--accent);
}

.nav-label {
  font-size: 12px;
}

.nav-muted {
  color: var(--dimmer);
}

.side-sep {
  height: 1px;
  margin: 7px 8px;
  background: var(--line-soft);
}

.side-spacer {
  flex: 1 1 auto;
  min-height: 18px;
}

.side-user {
  padding: 8px;
  border-top: 1px solid var(--line-soft);
}

.side-user-name {
  color: var(--fg-bright);
  font-size: 11.5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.side-user-meta {
  margin-top: 2px;
  color: var(--dim);
  font-size: 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.side-foot {
  display: flex;
  justify-content: space-between;
  padding: 7px 8px 0;
  color: var(--dimmer);
  font-size: 9px;
  letter-spacing: 0.3px;
}

.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.view-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex: 0 0 31px;
  padding: 0 13px;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(0, 0, 0, 0.62);
  font-size: 12px;
}

.view-path {
  display: flex;
  align-items: center;
  gap: 2px;
  white-space: nowrap;
}

.view-path #view-title {
  color: var(--fg-bright);
}

.cursor-block {
  display: inline-block;
  width: 7px;
  height: 13px;
  margin-left: 5px;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.view-meta {
  color: var(--dim);
  font-size: 10px;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.view {
  flex: 1 1 auto;
  min-height: 0;
  padding: 13px;
  overflow: auto;
  outline: none;
  scrollbar-gutter: stable;
}

.view > .view-inner {
  max-width: 1400px;
  margin: 0 auto;
}

/* -------------------------------------------------------------------- panels */

.panel {
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--bg);
  box-shadow: none;
}

.panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 3px 8px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-title);
  color: var(--accent);
  font-size: 9.5px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.panel-title .title-note {
  color: var(--dim);
  letter-spacing: 0.4px;
  text-transform: none;
  font-size: 9.5px;
}

.panel-body {
  padding: 10px;
}

.panel-body.tight {
  padding: 6px 8px;
}

/* ------------------------------------------------------------------ dashboard */

.dash-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  align-items: start;
}

.span-2 { grid-column: span 2; }
.span-3 { grid-column: 1 / -1; }

.counters-panel { grid-column: span 2; }

.identity {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.identity-name {
  margin: 0;
  color: var(--fg-bright);
  font-size: clamp(20px, 2.1vw, 27px);
  line-height: 1.15;
  letter-spacing: -0.5px;
  text-shadow: 0 0 14px rgba(124, 156, 255, 0.25);
}

.identity-sub {
  margin-top: 3px;
  color: var(--dim);
  font-size: 11px;
}

.class-chip {
  display: inline-block;
  margin-left: 6px;
  padding: 0 6px;
  border: 1px solid var(--accent-mid);
  color: var(--accent);
  font-size: 10px;
}

.kv {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 3px 14px;
  margin: 12px 0 0;
  font-size: 11px;
}

.kv dt {
  color: var(--dim);
}

.kv dd {
  margin: 0;
  color: var(--accent);
  overflow-wrap: anywhere;
}

.lucky {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 128px;
  padding: 8px;
}

.lucky-number {
  color: var(--amber);
  font-size: clamp(46px, 5.5vw, 68px);
  font-weight: 700;
  line-height: 1;
  text-shadow:
    0 0 12px rgba(255, 206, 107, 0.45),
    0 0 36px rgba(255, 206, 107, 0.15);
}

.lucky-label {
  margin-top: 8px;
  color: var(--dim);
  font-size: 9.5px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
}

.behaviour {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 128px;
  padding: 8px;
}

.behaviour-grade {
  color: var(--fg-bright);
  font-size: clamp(17px, 1.8vw, 22px);
  line-height: 1.2;
}

.behaviour-teacher {
  margin-top: 7px;
  color: var(--dim);
  font-size: 10.5px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  padding: 9px 12px;
  border: 0;
  border-right: 1px solid var(--line-soft);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background 0.1s;
}

.stat:last-child {
  border-right: 0;
}

.stat:hover {
  background: rgba(124, 156, 255, 0.06);
}

.stat-value {
  color: var(--fg-bright);
  font-size: 23px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  color: var(--dim);
  font-size: 9.5px;
  letter-spacing: 1.1px;
  text-transform: uppercase;
}

.stat.warn .stat-value {
  color: var(--amber);
}

.lesson-list {
  display: flex;
  flex-direction: column;
}

.lesson-line {
  display: grid;
  grid-template-columns: 48px 10px minmax(0, 1fr) auto;
  gap: 7px;
  align-items: baseline;
  padding: 4px 2px;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 11.5px;
}

.lesson-line:last-child {
  border-bottom: 0;
}

.lesson-line .time {
  color: var(--dim);
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
}

.lesson-line .marker {
  color: var(--dimmer);
}

.lesson-line .subject {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lesson-line .room {
  color: var(--dim);
  font-size: 10px;
}

.lesson-line.now {
  background: rgba(124, 156, 255, 0.06);
}

.lesson-line.now .marker,
.lesson-line.now .subject {
  color: var(--fg-bright);
}

.lesson-line.next .marker {
  color: var(--amber);
}

.lesson-line.cancelled .subject {
  color: var(--dimmer);
  text-decoration: line-through;
}

.freeday-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 5px 2px;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 11.5px;
}

.freeday-line:last-child {
  border-bottom: 0;
}

.freeday-line .name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.countdown {
  color: var(--dim);
  font-size: 9.5px;
  white-space: nowrap;
}

.countdown.soon {
  color: var(--amber);
}

.countdown.now {
  color: var(--fg-bright);
}

/* ------------------------------------------------------------------- toolbar */

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
  color: var(--dim);
  font-size: 10.5px;
}

.toolbar .grow {
  flex: 1;
}

.toolbar kbd {
  margin: 0 1px;
}

.tool-input {
  width: min(230px, 100%);
  padding: 4px 7px;
  border: 1px solid var(--line);
  background: #000000;
  color: var(--fg-bright);
  outline: none;
}

.tool-input:focus {
  border-color: var(--accent-mid);
  box-shadow: 0 0 0 1px rgba(124, 156, 255, 0.12);
}

.tool-input::placeholder {
  color: var(--dimmer);
}

.btn-sm {
  padding: 3px 8px;
  font-size: 10.5px;
}

.btn-warn {
  border-color: var(--amber-dim);
  color: var(--amber);
}

/* -------------------------------------------------------------------- grades */

.grades-summary {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.grades-summary b {
  color: var(--fg-bright);
}

.grades-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  align-items: start;
}

.subject-card .panel-title {
  text-transform: none;
  letter-spacing: 0.3px;
  font-size: 11px;
}

.subject-average {
  color: var(--amber);
  font-size: 10.5px;
  white-space: nowrap;
}

.grade-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.grade-chip {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  min-width: 58px;
  padding: 4px 7px 3px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  background: #050507;
  color: var(--accent);
  text-align: left;
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s, transform 0.1s;
}

.grade-chip:hover {
  background: rgba(124, 156, 255, 0.07);
  transform: translateY(-1px);
}

.grade-chip .g {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.1;
}

.grade-chip .g-meta {
  max-width: 110px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--dim);
  font-size: 8.5px;
  letter-spacing: 0.2px;
}

.grade-chip .g-weight {
  position: absolute;
  top: 2px;
  right: 3px;
  color: var(--dimmer);
  font-size: 8px;
}

.grade-chip.g-excellent { border-bottom-color: var(--accent-mid); }
.grade-chip.g-excellent .g { color: var(--fg-bright); }
.grade-chip.g-good { border-bottom-color: var(--cyan); }
.grade-chip.g-good .g { color: var(--cyan); }
.grade-chip.g-ok { border-bottom-color: var(--amber); }
.grade-chip.g-ok .g { color: var(--amber); }
.grade-chip.g-bad { border-bottom-color: var(--red); }
.grade-chip.g-bad .g { color: var(--red); }
.grade-chip.g-none { border-bottom-color: var(--dimmer); }
.grade-chip.g-none .g { color: var(--dim); }

.grade-chip.final {
  border-style: dashed;
  background: rgba(124, 156, 255, 0.05);
}

.grade-chip.semester {
  outline: 1px solid var(--line);
  outline-offset: 2px;
}

.legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  color: var(--dim);
  font-size: 9.5px;
}

.legend .swatch {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 4px;
  border: 1px solid currentColor;
}

.legend .swatch.green { color: var(--accent-mid); background: rgba(124, 156, 255, 0.3); }
.legend .swatch.cyan { color: var(--cyan); background: rgba(126, 232, 255, 0.25); }
.legend .swatch.amber { color: var(--amber); background: rgba(255, 206, 107, 0.25); }
.legend .swatch.red { color: var(--red); background: rgba(255, 119, 119, 0.25); }

/* ----------------------------------------------------------------- timetable */

.timetable-scroll {
  overflow: auto;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.55);
}

.timetable {
  display: grid;
  min-width: 780px;
}

.tt-cell {
  min-width: 0;
  min-height: 64px;
  padding: 4px 6px;
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  font-size: 10.5px;
}

.tt-cell:nth-child(-n + 5) {
  /* header row is handled explicitly */
}

.tt-head {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 1px;
  justify-content: center;
  min-height: 34px;
  padding: 4px 6px;
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line);
  background: var(--panel-title);
  color: var(--accent);
  font-size: 10.5px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.tt-head .date {
  color: var(--dim);
  font-size: 9px;
  letter-spacing: 0.2px;
  text-transform: none;
}

.tt-head.today {
  background: #0e1428;
  color: var(--fg-bright);
}

.tt-hour {
  position: sticky;
  left: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
  padding: 4px 5px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line-soft);
  background: #050507;
  color: var(--dim);
  font-size: 9.5px;
  font-variant-numeric: tabular-nums;
}

.tt-hour b {
  color: var(--accent);
  font-size: 11px;
}

.tt-hour.corner {
  position: sticky;
  top: 0;
  z-index: 4;
  background: var(--panel-title);
  color: var(--dimmer);
  text-align: center;
}

.tt-lesson + .tt-lesson {
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px dashed var(--line-soft);
}

.tt-lesson {
  display: flex;
  flex-direction: column;
  gap: 1px;
  height: 100%;
}

.tt-subject {
  color: var(--fg-bright);
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.tt-meta {
  color: var(--dim);
  font-size: 9px;
  line-height: 1.3;
}

.tt-room {
  color: var(--cyan);
}

.tt-flags {
  display: flex;
  gap: 3px;
  flex-wrap: wrap;
  margin-top: 1px;
}

.tt-flag {
  padding: 0 3px;
  border: 1px solid currentColor;
  font-size: 7.5px;
  line-height: 12px;
  letter-spacing: 0.4px;
}

.tt-flag.sub { color: var(--amber); }
.tt-flag.cancel { color: var(--red); }
.tt-flag.extra { color: var(--cyan); }

.tt-lesson.cancelled .tt-subject {
  color: var(--dimmer);
  text-decoration: line-through;
}

.tt-lesson.cancelled .tt-meta {
  color: var(--dimmer);
}

.tt-empty {
  color: var(--dimmer);
  font-size: 10px;
  text-align: center;
  padding-top: 10px;
}

.tt-free {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--dimmer);
}

/* --------------------------------------------------------------------- tables */

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11.5px;
}

.data-table th {
  padding: 5px 7px;
  border-bottom: 1px solid var(--line);
  color: var(--dim);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 1.2px;
  text-align: left;
  text-transform: uppercase;
  white-space: nowrap;
}

.data-table td {
  padding: 6px 7px;
  border-bottom: 1px dashed var(--line-soft);
  vertical-align: top;
}

.data-table tbody tr:hover {
  background: rgba(124, 156, 255, 0.04);
}

.data-table tbody tr[data-exam] {
  cursor: pointer;
}

.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table .num {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.data-table .strong {
  color: var(--fg-bright);
}

.data-table .soft {
  color: var(--dim);
}

.data-table .content-cell {
  color: var(--dim);
  max-width: 480px;
}

.date-badge {
  display: inline-block;
  padding: 1px 5px;
  border: 1px solid var(--line);
  color: var(--accent);
  font-size: 10px;
  white-space: nowrap;
}

.date-badge.soon {
  border-color: var(--amber-dim);
  color: var(--amber);
}

.date-badge.urgent {
  border-color: var(--red-dim);
  color: var(--red);
}

.tag {
  display: inline-block;
  padding: 0 4px;
  border: 1px solid currentColor;
  font-size: 8.5px;
  line-height: 14px;
  letter-spacing: 0.4px;
  white-space: nowrap;
}

.tag-green { color: var(--accent-mid); }
.tag-amber { color: var(--amber); }
.tag-red { color: var(--red); }
.tag-cyan { color: var(--cyan); }
.tag-dim { color: var(--dim); }
.tag-violet { color: var(--violet); }

/* ----------------------------------------------------------------- attendance */

.att-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}

.att-tile {
  padding: 8px 11px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.6);
}

.att-tile .value {
  color: var(--fg-bright);
  font-size: 21px;
  line-height: 1.15;
}

.att-tile .label {
  color: var(--dim);
  font-size: 9px;
  letter-spacing: 1.1px;
  text-transform: uppercase;
}

.att-tile.absent .value { color: var(--red); }
.att-tile.late .value { color: var(--amber); }

.presence {
  font-weight: 700;
}

.presence.yes { color: var(--accent); }
.presence.no { color: var(--red); }

/* ------------------------------------------------------------------- messages */

.messages-layout {
  display: grid;
  grid-template-columns: minmax(250px, 0.85fr) minmax(0, 1.35fr);
  gap: 10px;
  align-items: start;
}

.message-list {
  max-height: min(66vh, 680px);
  overflow: auto;
}

.message-item {
  display: block;
  width: 100%;
  padding: 7px 9px;
  border: 0;
  border-bottom: 1px dashed var(--line-soft);
  background: transparent;
  color: var(--fg-bright);
  text-align: left;
  cursor: pointer;
}

.message-item:hover {
  background: rgba(124, 156, 255, 0.05);
}

.message-item.active {
  background: rgba(124, 156, 255, 0.14);
  color: var(--fg-bright);
  box-shadow: inset 2px 0 0 var(--accent);
}

.message-item.active .msg-from,
.message-item.active .msg-date {
  color: var(--dim);
}

.msg-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: baseline;
}

.msg-from {
  color: var(--dim);
  font-size: 9.5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.msg-date {
  color: var(--dimmer);
  font-size: 9px;
  white-space: nowrap;
}

.msg-subject {
  margin-top: 1px;
  font-size: 11.5px;
  line-height: 1.3;
}

.msg-unread {
  color: var(--amber);
}

.message-item.active .msg-unread {
  color: var(--amber);
}

.message-reader {
  max-height: min(66vh, 680px);
  overflow: auto;
}

.reader-head {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

.reader-subject {
  margin: 0;
  color: var(--fg-bright);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.reader-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 5px;
  color: var(--dim);
  font-size: 10px;
}

.message-body {
  padding: 12px;
  color: #d4d4d8;
  font-size: 12px;
  line-height: 1.65;
  overflow-wrap: anywhere;
  overflow-x: auto;
}

.message-body p {
  margin: 0 0 0.8em;
}

.message-body a {
  color: var(--cyan);
  text-decoration: underline;
}

.message-body b,
.message-body strong {
  color: var(--fg-bright);
}

.message-body ul,
.message-body ol {
  margin: 0 0 0.8em;
  padding-left: 22px;
}

.message-body img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

.message-body table {
  max-width: 100%;
  border-collapse: collapse;
}

.message-body td,
.message-body th {
  padding: 3px 6px;
  border: 1px solid var(--line-soft);
}

.message-body blockquote {
  margin: 0 0 0.8em;
  padding-left: 10px;
  border-left: 2px solid var(--line);
  color: var(--dim);
}

.attachments {
  padding: 0 12px 12px;
}

.attachments-title {
  margin-bottom: 5px;
  color: var(--dim);
  font-size: 9px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
}

.attachment {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 6px;
  border: 1px solid var(--line-soft);
  color: var(--cyan);
  font-size: 10.5px;
  text-decoration: none;
  margin-bottom: 4px;
}

.attachment:hover {
  border-color: var(--cyan);
  background: rgba(126, 232, 255, 0.06);
}

.attachment .size-hint {
  margin-left: auto;
  color: var(--dim);
  font-size: 9px;
}

/* -------------------------------------------------------------------- free days */

.split-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  align-items: start;
}

.free-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 6px 2px;
  border-bottom: 1px dashed var(--line-soft);
}

.free-item:last-child {
  border-bottom: 0;
}

.free-name {
  color: var(--accent);
}

.free-dates {
  color: var(--dim);
  font-size: 10px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.conf-item {
  padding: 6px 2px;
  border-bottom: 1px dashed var(--line-soft);
}

.conf-item:last-child {
  border-bottom: 0;
}

.conf-name {
  color: var(--fg-bright);
}

.conf-meta {
  color: var(--dim);
  font-size: 10px;
  margin-top: 1px;
}

/* ---------------------------------------------------------------- empty/loading */

.empty {
  padding: 26px 12px;
  color: var(--dimmer);
  text-align: center;
  font-size: 11px;
  letter-spacing: 1px;
}

.empty::before {
  content: "[ ";
}

.empty::after {
  content: " ]";
}

.loading {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 30px 8px;
  color: var(--dim);
  font-size: 11.5px;
  letter-spacing: 0.5px;
}

.spinner {
  color: var(--accent);
  font-size: 15px;
}

.error-panel {
  max-width: 640px;
  margin: 30px auto;
  border: 1px solid var(--red-dim);
}

.error-panel .panel-title {
  background: #18070b;
  border-bottom-color: var(--red-dim);
  color: var(--red);
}

.error-message {
  padding: 14px;
  color: #ffb3b3;
  font-size: 12px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.error-actions {
  padding: 0 14px 14px;
}

/* --------------------------------------------------------------------- command */

.command {
  flex: 0 0 auto;
  border-top: 1px solid var(--line);
  background: #000000;
}

.command-line {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 29px;
  padding: 2px 10px;
  color: var(--dim);
  font-size: 11.5px;
  overflow: hidden;
}

.prompt {
  color: var(--accent-mid);
  white-space: nowrap;
}

.command-display {
  color: var(--fg-bright);
  white-space: nowrap;
}

.command-input {
  flex: 1;
  min-width: 120px;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--fg-bright);
  caret-color: var(--accent);
}

.command-hint {
  margin-left: auto;
  color: var(--dimmer);
  font-size: 9.5px;
  white-space: nowrap;
}

.command-line.command-mode {
  background: #08080c;
}

.statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 21px;
  padding: 0 10px;
  background: #050508;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.status-left {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.status-left.error { color: var(--red); }
.status-left.ok { color: var(--accent); }

.status-keys {
  display: flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
  opacity: 0.78;
}

.status-keys kbd {
  border-color: var(--line);
  background: rgba(0, 0, 0, 0.3);
  color: var(--dim);
}

.status-right {
  white-space: nowrap;
  opacity: 0.7;
}

kbd {
  display: inline-block;
  min-width: 13px;
  padding: 0 3px;
  border: 1px solid var(--line);
  color: var(--dim);
  font-family: inherit;
  font-size: 9px;
  line-height: 14px;
  text-align: center;
}

/* --------------------------------------------------------------------- toasts */

.toasts {
  position: fixed;
  right: 22px;
  bottom: 56px;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: min(380px, calc(100vw - 30px));
  pointer-events: none;
}

.toast {
  padding: 7px 10px;
  border: 1px solid var(--line);
  background: rgba(8, 8, 10, 0.96);
  color: var(--accent);
  font-size: 11px;
  line-height: 1.45;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.5);
  animation: toast-in 0.16s ease-out;
}

.toast.ok { border-color: var(--accent-mid); }
.toast.err { border-color: var(--red-dim); color: #ffb3b3; }
.toast.warn { border-color: var(--amber-dim); color: var(--amber); }

.toast .toast-prefix {
  margin-right: 5px;
  font-weight: 700;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------- modal */

.modal-root {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(1px);
}

.modal-box {
  position: relative;
  width: min(660px, 100%);
  max-height: min(82vh, 720px);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--accent-mid);
  background: #000000;
  box-shadow:
    0 0 0 1px #000,
    0 0 40px rgba(124, 156, 255, 0.12),
    0 20px 80px rgba(0, 0, 0, 0.65);
  outline: none;
  animation: modal-in 0.13s ease-out;
}

@keyframes modal-in {
  from { opacity: 0; transform: scale(0.985); }
  to { opacity: 1; transform: scale(1); }
}

.modal-title {
  flex: 0 0 auto;
  padding: 4px 10px;
  background: #0a0a0d;
  color: var(--accent);
  border-bottom: 1px solid var(--line);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.7px;
  text-transform: uppercase;
}

.modal-body {
  flex: 1 1 auto;
  padding: 14px;
  overflow: auto;
  color: #d4d4d8;
  font-size: 12px;
  line-height: 1.65;
}

.modal-body p {
  margin: 0 0 0.8em;
}

.modal-body p:last-child {
  margin-bottom: 0;
}

.modal-actions {
  flex: 0 0 auto;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 0 14px 14px;
  flex-wrap: wrap;
}

.modal-actions .btn {
  min-width: 92px;
}

.detail-grid {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 5px 14px;
  margin: 0;
}

.detail-grid dt {
  color: var(--dim);
  font-size: 10px;
  letter-spacing: 0.7px;
  text-transform: uppercase;
}

.detail-grid dd {
  margin: 0;
  color: var(--fg-bright);
  overflow-wrap: anywhere;
}

.detail-comment {
  margin-top: 14px;
  padding: 8px 10px;
  border-left: 2px solid var(--line);
  color: var(--dim);
  font-style: italic;
}

.help-grid {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 4px 18px;
  margin: 0;
}

.help-grid dt {
  color: var(--accent);
  white-space: nowrap;
}

.help-grid dd {
  margin: 0;
  color: var(--dim);
}

.help-grid code,
.help-section + p code {
  color: var(--cyan);
}

.help-section {
  margin: 16px 0 7px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--accent);
  font-size: 9.5px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.help-section:first-child {
  margin-top: 0;
}

/* ------------------------------------------------------------------ scrollbars */

* {
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

::-webkit-scrollbar {
  width: 9px;
  height: 9px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #26262c;
  border: 2px solid #000000;
}

::-webkit-scrollbar-thumb:hover {
  background: #4f7cff;
}

/* ------------------------------------------------------------------- responsive */

@media (max-width: 1120px) {
  .dash-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .dash-grid .span-2 {
    grid-column: span 2;
  }
  .dash-grid .identity-panel,
  .dash-grid .counters-panel,
  .dash-grid .today-panel,
  .dash-grid .freedays-panel {
    grid-column: span 2;
  }
  .grades-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  body {
    padding: 0;
  }
  .crt,
  .terminal {
    height: 100dvh;
  }
  .terminal {
    border: 0;
  }
  .app-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
  }
  .sidebar {
    flex-direction: row;
    align-items: center;
    gap: 2px;
    padding: 4px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
    overflow-y: hidden;
  }
  .side-head,
  .side-sep,
  .side-spacer,
  .side-user,
  .side-foot,
  .nav-muted {
    display: none;
  }
  .nav-item {
    flex: 0 0 auto;
    width: auto;
    padding: 4px 7px;
  }
  .nav-label {
    font-size: 10.5px;
  }
  .messages-layout {
    grid-template-columns: 1fr;
  }
  .message-list,
  .message-reader {
    max-height: 48vh;
  }
}

@media (max-width: 720px) {
  .login-grid {
    grid-template-columns: 1fr;
  }
  .login-wrap {
    padding-top: 24px;
  }
  .logo-sub {
    margin-bottom: 20px;
    letter-spacing: 1.4px;
  }
  .login-hint {
    display: none;
  }
  .titlebar-sub,
  .titlebar-date {
    display: none;
  }
  .dash-grid,
  .split-2,
  .att-summary {
    grid-template-columns: 1fr;
  }
  .dash-grid .span-2,
  .dash-grid .identity-panel,
  .dash-grid .counters-panel,
  .dash-grid .today-panel,
  .dash-grid .freedays-panel {
    grid-column: span 1;
  }
  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .stat:nth-child(2) {
    border-right: 0;
  }
  .stat:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-soft);
  }
  .command-hint,
  .status-keys {
    display: none;
  }
  .view {
    padding: 9px;
  }
  .view-meta {
    display: none;
  }
  .att-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}