:root {
  --cdv-black: #111111;
  --cdv-white: #ffffff;
  --cdv-accent: #00afdb;
  --cdv-accent-strong: #0097be;
  --cdv-gray-900: #171717;
  --cdv-gray-800: #222222;
  --cdv-gray-700: #2f2f2f;
  --cdv-gray-500: #777777;
  --cdv-gray-300: #c8c8c8;
  --cdv-danger: #ff6c6c;

  --radius-lg: 24px;
  --radius-md: 14px;
  --radius-pill: 999px;
  --shadow-lg: 0 22px 44px rgba(0, 0, 0, 0.28);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
}

* {
  box-sizing: border-box;
}

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

html {
  background: #0c0c0c;
}

body {
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--cdv-white);
  min-height: 100dvh;
  background:
    radial-gradient(circle at 82% 10%, rgba(0, 175, 219, 0.22), transparent 40%),
    radial-gradient(circle at 6% 80%, rgba(0, 175, 219, 0.16), transparent 35%),
    linear-gradient(145deg, #141414 0%, #0c0c0c 100%);
}

@supports (-webkit-touch-callout: none) {
  html,
  body {
    min-height: -webkit-fill-available;
  }
}

.bg-orb {
  position: fixed;
  pointer-events: none;
  border-radius: 999px;
  filter: blur(3px);
}

.bg-orb-left {
  display: none;
}

.bg-orb-right {
  width: 300px;
  height: 300px;
  right: -80px;
  bottom: 10%;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0));
}

.app-shell {
  width: min(880px, 92vw);
  margin: 0 auto;
  padding: calc(var(--safe-top) + 16px) var(--safe-right) calc(var(--safe-bottom) + 26px) var(--safe-left);
}

.hidden {
  display: none;
}

.brand-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  position: relative;
  z-index: 60;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 70;
}

.brand-lockup {
  display: grid;
  gap: 6px;
}

.cdv-logo {
  width: min(220px, 52vw);
  height: auto;
}

.brand-note {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cdv-gray-300);
}

.settings-menu {
  position: relative;
}

.settings-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
  color: var(--cdv-white);
  font-size: 20px;
  line-height: 1;
  padding: 0;
  display: grid;
  place-items: center;
}

.settings-icon {
  width: 20px;
  height: 20px;
  color: var(--cdv-white);
}

.settings-panel {
  position: absolute;
  top: 48px;
  right: 0;
  width: min(280px, 80vw);
  max-width: calc(100vw - 24px);
  background: rgba(18, 18, 18, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  padding: 10px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
  z-index: 120;
  transform-origin: top right;
}

.settings-title {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cdv-gray-300);
}

.settings-options {
  display: grid;
  gap: 6px;
}

.settings-option {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 10px;
  padding: 8px 10px;
  text-align: left;
  font: inherit;
  font-size: 14px;
  color: var(--cdv-white);
  background: rgba(255, 255, 255, 0.06);
}

.settings-option.is-active {
  background: linear-gradient(180deg, #20bfe7, var(--cdv-accent-strong));
  border-color: rgba(0, 175, 219, 0.7);
}

.lang-switch {
  display: flex;
  gap: 6px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-pill);
  padding: 4px;
}

.account-menu {
  position: relative;
}

.account-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
  padding: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
  transition: transform 100ms ease, box-shadow 140ms ease, border-color 140ms ease;
  flex-shrink: 0;
}

.account-btn:hover {
  border-color: rgba(0, 175, 219, 0.7);
}

.account-btn:active,
.account-btn.is-pressed {
  transform: scale(0.97);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.28);
}

.account-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 175, 219, 0.35), 0 8px 18px rgba(0, 0, 0, 0.28);
}

.account-avatar,
.account-panel-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.account-avatar {
  display: block;
  object-position: center top;
  border-radius: 50%;
  background: #1e252d;
}

.account-panel {
  position: absolute;
  top: 52px;
  right: 0;
  width: min(320px, 84vw);
  max-width: calc(100vw - 24px);
  background: rgba(18, 18, 18, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  padding: 12px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
  z-index: 120;
}

.account-panel.is-mobile-left {
  right: 0;
  left: auto;
  transform-origin: top right;
}

.nav-arrows .btn-nav {
  margin: 0;
}

.account-head {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}

.account-panel-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.account-name {
  margin: 0;
  font-weight: 700;
  font-size: 14px;
}

.account-email {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--cdv-gray-300);
}

.account-meta-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 8px;
  margin-top: 8px;
  font-size: 13px;
}

.account-label {
  color: var(--cdv-gray-300);
}

.account-value {
  text-align: right;
  max-width: 64%;
  white-space: normal;
}

.account-logout {
  margin-top: 10px;
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  padding: 9px 10px;
  font: inherit;
  font-weight: 700;
  color: var(--cdv-white);
  background: rgba(221, 75, 57, 0.28);
}

.account-logout:active,
.account-logout.is-pressed {
  transform: scale(0.99);
}

.lang-btn {
  border: 0;
  border-radius: var(--radius-pill);
  min-width: 44px;
  height: 34px;
  font: inherit;
  font-weight: 700;
  color: var(--cdv-gray-300);
  background: transparent;
  transition: background-color 160ms ease, color 160ms ease, transform 120ms ease;
}

.lang-btn[aria-pressed="true"] {
  background: var(--cdv-accent);
  color: var(--cdv-white);
}

.lang-btn:hover {
  color: var(--cdv-white);
}

.auth-screen {
  max-width: 560px;
  margin: 0 auto;
}

.app-screen {
  animation: fadeIn 260ms ease-out;
}

.top-card {
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  padding: 18px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lg);
  animation: slideIn 300ms ease-out;
}

.app-top-card {
  position: sticky;
  top: var(--safe-top);
  z-index: 40;
  background: linear-gradient(165deg, rgba(20, 20, 20, 0.92), rgba(28, 28, 28, 0.78));
  backdrop-filter: blur(18px);
}

.updated-at {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--cdv-gray-300);
}

.brand {
  margin: 0;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--cdv-accent);
  font-weight: 700;
  font-size: 12px;
}

h1 {
  margin: 8px 0 6px;
  font-size: clamp(30px, 5vw, 38px);
  line-height: 1.1;
}

.subtitle {
  margin: 0;
  color: var(--cdv-gray-300);
  font-size: 15px;
}

.credentials-form {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.field {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--cdv-gray-300);
}

.field input {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 11px 12px;
  background: rgba(0, 0, 0, 0.35);
  color: var(--cdv-white);
  font: inherit;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.field input::placeholder {
  color: var(--cdv-gray-500);
}

.field input:focus-visible {
  outline: none;
  border-color: var(--cdv-accent);
  box-shadow: 0 0 0 3px rgba(0, 175, 219, 0.28);
}

.remember-row {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--cdv-gray-300);
  font-size: 13px;
}

.hint {
  margin: 4px 0 0;
  min-height: 18px;
  font-size: 12px;
  color: var(--cdv-gray-300);
}

.credentials-form.is-loading {
  opacity: 0.88;
}

.credentials-form.is-loading input,
.credentials-form.is-loading button {
  cursor: wait;
}

.controls {
  margin-top: 14px;
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  align-items: center;
}

.nav-arrows {
  display: inline-flex;
  gap: 8px;
  align-items: center;
}

.btn {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-pill);
  padding: 10px 14px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--cdv-white);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.08));
  transition: transform 90ms ease, filter 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.26);
}

.btn:hover {
  filter: brightness(1.06);
}

.btn:active,
.btn.is-pressed {
  transform: translateY(1px) scale(0.98);
  filter: brightness(0.96);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
}

.btn:focus-visible,
.lang-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 175, 219, 0.35);
}

.btn-strong {
  background: linear-gradient(180deg, #20bfe7, var(--cdv-accent-strong));
  color: var(--cdv-white);
  border-color: rgba(0, 175, 219, 0.7);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
}

.btn-nav {
  width: 42px;
  min-width: 42px;
  padding: 0;
  font-size: 26px;
  line-height: 1;
  font-weight: 700;
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.status {
  margin-top: 12px;
  border-radius: var(--radius-md);
  padding: 11px 13px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--cdv-gray-300);
  font-size: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.status.error {
  color: var(--cdv-danger);
  border-color: rgba(255, 108, 108, 0.35);
}

.next-info {
  margin: 8px 0 0;
  min-height: 18px;
  font-size: 13px;
  color: var(--cdv-gray-300);
}

.schedule {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.schedule.is-loading {
  opacity: 0.65;
}

.day-group {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-md);
  padding: 12px;
  backdrop-filter: blur(8px);
  animation: fadeIn 330ms ease-out;
}

.day-group.is-today-day {
  border-color: rgba(255, 255, 255, 0.42);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.24), 0 14px 28px rgba(0, 0, 0, 0.28);
}

.day-group.is-now-day {
  border-color: rgba(255, 255, 255, 0.72);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.34), 0 18px 32px rgba(0, 0, 0, 0.34);
}

.day-group.is-upcoming-today-day {
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.28), 0 16px 30px rgba(0, 0, 0, 0.3);
}

.day-group.is-nearest-day {
  border-color: rgba(0, 175, 219, 0.44);
  box-shadow: 0 0 0 1px rgba(0, 175, 219, 0.26), 0 14px 28px rgba(0, 0, 0, 0.28);
}

.day-title {
  margin: 0 0 10px;
  font-size: 18px;
}

.lesson {
  border-radius: 12px;
  padding: 10px;
  margin-top: 8px;
  background: rgba(0, 0, 0, 0.28);
  border-left: 4px solid var(--lesson-color, var(--cdv-accent));
  --lesson-highlight-strong: rgba(255, 149, 0, 0.4);
  --lesson-highlight-soft: rgba(255, 149, 0, 0.2);
  --lesson-shadow-color: rgba(255, 149, 0, 0.35);
}

.lesson.is-today {
  background: linear-gradient(135deg, var(--lesson-highlight-strong), var(--lesson-highlight-soft));
  border-left-color: var(--lesson-color, var(--cdv-accent));
  box-shadow: 0 0 0 1px var(--lesson-shadow-color), 0 8px 18px -12px var(--lesson-shadow-color);
}

.lesson.is-now {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.18), var(--lesson-highlight-strong));
  border-left-width: 6px;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3), 0 14px 28px -14px var(--lesson-shadow-color);
}

.lesson.is-upcoming-today {
  background: linear-gradient(135deg, var(--lesson-highlight-soft), rgba(255, 255, 255, 0.12));
  border-left-width: 5px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.18), 0 10px 22px -14px var(--lesson-shadow-color);
}

.lesson.is-nearest {
  background: linear-gradient(135deg, var(--lesson-highlight-soft), rgba(255, 255, 255, 0.06));
  border-left-color: var(--lesson-color, var(--cdv-accent));
  box-shadow: 0 0 0 1px var(--lesson-shadow-color), 0 6px 14px -12px var(--lesson-shadow-color);
}

.lesson:first-child {
  margin-top: 0;
}

.lesson-time {
  font-size: 13px;
  color: var(--cdv-gray-300);
}

.lesson-title {
  margin-top: 3px;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: flex-start;
}

.lesson-room-badge {
  font-size: 12px;
  font-weight: 800;
  color: var(--cdv-white);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  padding: 2px 8px;
  flex-shrink: 0;
}

.lesson-sub {
  margin-top: 4px;
  font-size: 13px;
  color: var(--cdv-gray-300);
}

.lesson-meta {
  margin-top: 6px;
  display: grid;
  gap: 2px;
  font-size: 12px;
  color: var(--cdv-gray-300);
}

.empty {
  text-align: center;
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  border: 1px dashed rgba(255, 255, 255, 0.26);
  color: var(--cdv-gray-300);
}

@keyframes slideIn {
  from {
    transform: translateY(10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 620px) {
  .app-shell {
    width: 94vw;
    padding-top: calc(var(--safe-top) + 8px);
    padding-right: max(var(--safe-right), 0px);
    padding-bottom: calc(var(--safe-bottom) + 20px);
    padding-left: max(var(--safe-left), 0px);
  }

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

  .top-actions {
    align-self: stretch;
    justify-content: space-between;
    width: 100%;
    gap: 8px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
  }

  .settings-menu {
    justify-self: start;
  }

  .lang-switch {
    justify-self: center;
  }

  .account-menu {
    justify-self: end;
  }

  .settings-panel,
  .account-panel {
    right: auto;
    left: 0;
    width: min(90vw, 320px);
    max-width: min(90vw, 320px);
    transform-origin: top left;
  }

  .account-panel.is-mobile-left {
    right: 0;
    left: auto;
    transform-origin: top right;
  }

  .brand-note {
    color: #d7d7d7;
  }

  .top-card {
    padding: 14px;
  }

  .btn {
    min-width: 0;
  }

  #today {
    flex: 1;
  }
}