@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@24,300,0,-25');

:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #eef3fb;
  --border: #d6dfec;
  --text: #172033;
  --muted: #62708a;
  --primary: #1152d4;
  --primary-dark: #0c3b98;
  --success: #0f9f6e;
  --warning: #c27c12;
  --danger: #d14343;
  --shadow: 0 22px 50px rgba(17, 43, 89, 0.12);
  --radius: 18px;
  --header-bg-start: #0f3f9c;
  --header-bg-end: #1152d4;
  --header-text: #ffffff;
  --brand-logo-size: 54px;
  --header-title-size: 28px;
  --header-title-line-height: 1.05;
  --header-tagline-size: 16px;
  --header-tagline-line-height: 1.05;
  --header-brand-horizontal-align: flex-start;
  --header-brand-copy-align: start;
  --header-brand-text-align: left;
  --header-brand-vertical-align: center;
  --btn-primary-bg-start: #1152d4;
  --btn-primary-bg-end: #3b82f6;
  --btn-primary-text: #ffffff;
  --btn-primary-border-color: #1152d4;
  --btn-primary-border-width: 0px;
  --btn-primary-radius: 18px;
  --btn-primary-padding-y: 13px;
  --btn-primary-padding-x: 20px;
  --btn-primary-shadow: 0 12px 26px rgba(79, 70, 229, 0.14);
  --btn-secondary-bg-start: #1152d4;
  --btn-secondary-bg-end: #3b82f6;
  --btn-secondary-text: #ffffff;
  --btn-secondary-border-color: #1152d4;
  --btn-secondary-border-width: 0px;
  --btn-secondary-radius: 18px;
  --btn-secondary-padding-y: 13px;
  --btn-secondary-padding-x: 20px;
  --btn-secondary-shadow: 0 12px 26px rgba(79, 70, 229, 0.14);
  --btn-danger-bg-start: #ef4444;
  --btn-danger-bg-end: #d14343;
  --btn-danger-text: #ffffff;
  --btn-danger-border-color: #d14343;
  --btn-danger-border-width: 0px;
  --btn-danger-radius: 18px;
  --btn-danger-padding-y: 13px;
  --btn-danger-padding-x: 20px;
  --btn-danger-shadow: 0 12px 26px rgba(220, 38, 38, 0.16);
  --btn-ghost-bg-start: transparent;
  --btn-ghost-bg-end: transparent;
  --btn-ghost-text: #1152d4;
  --btn-ghost-border-color: #c9d7f2;
  --btn-ghost-border-width: 1px;
  --btn-ghost-radius: 18px;
  --btn-ghost-padding-y: 13px;
  --btn-ghost-padding-x: 20px;
  --btn-ghost-shadow: none;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(17, 82, 212, 0.12), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
  color: var(--text);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

.hidden {
  display: none !important;
}

.app-shell {
  min-height: 100vh;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card,
.panel,
.card,
.table-wrap,
.hero {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.login-card {
  width: min(460px, 100%);
  padding: 34px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary) 0%, #60a5fa 100%);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 22px;
  font-weight: 400;
}

.brand-logo {
  width: var(--brand-logo-size);
  height: auto;
  max-height: var(--brand-logo-size);
  object-fit: contain;
  border-radius: 0;
  background: transparent;
  border: 0;
  padding: 0;
}

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

.field,
.field-group {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field input,
.field textarea,
.field select,
.toolbar input,
.toolbar select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
}

.field textarea {
  min-height: 96px;
  resize: vertical;
}

.color-field {
  align-content: start;
}

.color-inputs {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
}

.color-inputs input[type="color"] {
  width: 64px;
  min-width: 64px;
  height: 48px;
  padding: 4px;
  border-radius: 12px;
  cursor: pointer;
}

.color-picker-btn {
  white-space: nowrap;
}

.color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.color-swatch {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.65);
  padding: 0;
}

.color-swatch.active {
  transform: scale(1.08);
  box-shadow: 0 0 0 3px rgba(17, 82, 212, 0.2);
}

.btn {
  border: var(--btn-border-width, 0px) solid var(--btn-border-color, transparent);
  border-radius: var(--btn-radius, 18px);
  padding: var(--btn-padding-y, 13px) var(--btn-padding-x, 20px);
  cursor: pointer;
  transition: 0.18s ease;
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 400;
  text-decoration: none;
  box-shadow: var(--btn-shadow, 0 12px 26px rgba(79, 70, 229, 0.14));
  color: var(--btn-text, #ffffff);
  background: var(--btn-background, linear-gradient(135deg, var(--btn-bg-start, #1152d4) 0%, var(--btn-bg-end, #3b82f6) 100%));
}

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

.btn-primary {
  --btn-bg-start: var(--btn-primary-bg-start);
  --btn-bg-end: var(--btn-primary-bg-end);
  --btn-text: var(--btn-primary-text);
  --btn-border-color: var(--btn-primary-border-color);
  --btn-border-width: var(--btn-primary-border-width);
  --btn-radius: var(--btn-primary-radius);
  --btn-padding-y: var(--btn-primary-padding-y);
  --btn-padding-x: var(--btn-primary-padding-x);
  --btn-shadow: var(--btn-primary-shadow);
  --btn-background: linear-gradient(135deg, var(--btn-primary-bg-start) 0%, var(--btn-primary-bg-end) 100%);
}

.btn-secondary {
  --btn-bg-start: var(--btn-secondary-bg-start);
  --btn-bg-end: var(--btn-secondary-bg-end);
  --btn-text: var(--btn-secondary-text);
  --btn-border-color: var(--btn-secondary-border-color);
  --btn-border-width: var(--btn-secondary-border-width);
  --btn-radius: var(--btn-secondary-radius);
  --btn-padding-y: var(--btn-secondary-padding-y);
  --btn-padding-x: var(--btn-secondary-padding-x);
  --btn-shadow: var(--btn-secondary-shadow);
  --btn-background: linear-gradient(135deg, var(--btn-secondary-bg-start) 0%, var(--btn-secondary-bg-end) 100%);
}

.btn-danger {
  --btn-bg-start: var(--btn-danger-bg-start);
  --btn-bg-end: var(--btn-danger-bg-end);
  --btn-text: var(--btn-danger-text);
  --btn-border-color: var(--btn-danger-border-color);
  --btn-border-width: var(--btn-danger-border-width);
  --btn-radius: var(--btn-danger-radius);
  --btn-padding-y: var(--btn-danger-padding-y);
  --btn-padding-x: var(--btn-danger-padding-x);
  --btn-shadow: var(--btn-danger-shadow);
  --btn-background: linear-gradient(135deg, var(--btn-danger-bg-start) 0%, var(--btn-danger-bg-end) 100%);
}

.btn-ghost {
  --btn-bg-start: var(--btn-ghost-bg-start);
  --btn-bg-end: var(--btn-ghost-bg-end);
  --btn-text: var(--btn-ghost-text);
  --btn-border-color: var(--btn-ghost-border-color);
  --btn-border-width: var(--btn-ghost-border-width);
  --btn-radius: var(--btn-ghost-radius);
  --btn-padding-y: var(--btn-ghost-padding-y);
  --btn-padding-x: var(--btn-ghost-padding-x);
  --btn-shadow: var(--btn-ghost-shadow);
  --btn-background: transparent;
}

.btn-pill {
  border-radius: 18px;
}

.btn .material-symbols-outlined {
  font-size: 20px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  min-height: 0;
  padding: 10px 18px;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--header-bg-start) 0%, var(--header-bg-end) 100%);
  color: var(--header-text);
  box-shadow: 0 18px 40px rgba(15, 40, 88, 0.18);
}

.topbar .muted {
  font-size: var(--header-tagline-size);
  line-height: var(--header-tagline-line-height);
  color: color-mix(in srgb, var(--header-text) 72%, transparent);
}

.topbar .brand {
  gap: 16px;
  margin: 0;
  align-items: var(--header-brand-vertical-align);
  justify-content: var(--header-brand-horizontal-align);
}

.topbar .brand > div {
  display: grid;
  gap: 6px;
  min-height: var(--brand-logo-size);
  align-content: center;
  justify-items: var(--header-brand-copy-align);
  text-align: var(--header-brand-text-align);
}

.brand-copy-empty {
  display: none !important;
}

.brand-force-center {
  align-items: center !important;
}

.topbar .brand.brand-force-center > div,
.preview-brand-main.brand-force-center .preview-brand-copy {
  gap: 0;
}

.topbar .brand strong {
  display: block;
  font-size: var(--header-title-size);
  line-height: var(--header-title-line-height);
}

.topbar .brand-logo {
  width: auto;
  height: var(--brand-logo-size);
  max-height: var(--brand-logo-size);
}

.topbar .brand-mark {
  width: var(--brand-logo-size);
  height: var(--brand-logo-size);
  border-radius: 16px;
  font-size: 30px;
}

.profile-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.14);
  color: var(--header-text);
  text-decoration: none;
  min-width: 0;
  border: 0;
}

.profile-chip:hover {
  background: rgba(255, 255, 255, 0.2);
}

.profile-chip .material-symbols-outlined {
  font-size: 20px;
}

.profile-chip-copy {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  white-space: nowrap;
}

.profile-chip-meta {
  color: color-mix(in srgb, var(--header-text) 78%, transparent);
}

.profile-chip-button {
  cursor: pointer;
}

.shell-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: calc(100vh - 88px);
}

.sidebar {
  padding: 0 18px 24px;
}

.sidebar-card {
  position: sticky;
  top: 12px;
  padding: 18px;
}

.nav-group {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.nav-link {
  padding: 11px 14px;
  border-radius: 12px;
  color: var(--muted);
}

.nav-link.active {
  background: linear-gradient(135deg, rgba(17, 82, 212, 0.16), rgba(96, 165, 250, 0.18));
  color: var(--primary-dark);
  font-weight: 600;
}

.main {
  padding: 0 24px 24px 0;
}

.hero {
  padding: 24px;
  margin-bottom: 20px;
}

.hero-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.stat {
  padding: 18px;
  border-radius: 16px;
  background: linear-gradient(180deg, #fff 0%, #f3f7ff 100%);
  border: 1px solid var(--border);
}

.stat-clickable {
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.stat-clickable:hover {
  transform: translateY(-2px);
  border-color: rgba(17, 82, 212, 0.32);
  box-shadow: 0 12px 26px rgba(17, 82, 212, 0.12);
}

.content-grid {
  display: grid;
  gap: 18px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  padding: 18px;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
  margin-bottom: 14px;
  overflow: hidden;
}

.card-icon .material-icon-stack {
  color: #fff;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.toolbar > * {
  flex: 1 1 180px;
}

.table-wrap {
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid #e7edf6;
  vertical-align: top;
}

th {
  background: #f7faff;
  color: var(--muted);
  font-size: 13px;
}

.panel-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 18px;
}

.panel {
  padding: 20px;
}

.profile-avatar-block,
.preview-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.profile-avatar {
  width: 84px;
  height: 84px;
  border-radius: 24px;
  object-fit: cover;
  border: 1px solid var(--border);
  background: #fff;
}

.profile-avatar.placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-dark);
}

.header-preview {
  justify-content: space-between;
  border-radius: 24px;
  padding: 22px;
}

.preview-brand-main {
  display: flex;
  gap: 16px;
  align-items: var(--header-brand-vertical-align);
  justify-content: var(--header-brand-horizontal-align);
}

.preview-brand-copy {
  display: grid;
  gap: 6px;
  min-height: var(--brand-logo-size);
  align-content: center;
  justify-items: var(--header-brand-copy-align);
  text-align: var(--header-brand-text-align);
}

.preview-brand-copy strong {
  font-size: var(--header-title-size);
  line-height: var(--header-title-line-height);
}

.preview-brand-tagline {
  font-size: var(--header-tagline-size);
  line-height: var(--header-tagline-line-height);
}

.favicon-preview-shell {
  display: grid;
  gap: 8px;
  justify-items: center;
}

.favicon-preview {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 4px;
}

.favicon-preview.placeholder {
  display: grid;
  place-items: center;
  font-weight: 700;
}

.button-style-grid {
  display: grid;
  gap: 18px;
  margin-top: 14px;
}

.button-style-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  background: linear-gradient(180deg, rgba(238, 243, 251, 0.45), rgba(255, 255, 255, 0.96));
}

.button-style-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.button-style-reset {
  min-height: 40px;
  padding: 10px 14px;
}

.button-metric-row {
  align-items: start;
}

.button-preview-row,
.button-preview-stack {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: #edf3ff;
  color: var(--primary-dark);
}

.badge.success {
  background: rgba(15, 159, 110, 0.14);
  color: var(--success);
}

.badge.warning {
  background: rgba(194, 124, 18, 0.14);
  color: var(--warning);
}

.badge.danger {
  background: rgba(209, 67, 67, 0.14);
  color: var(--danger);
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.notice {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
}

.notice.success {
  background: rgba(15, 159, 110, 0.12);
  border-color: rgba(15, 159, 110, 0.2);
  color: #0c6f4e;
}

.notice.error {
  background: rgba(209, 67, 67, 0.12);
  border-color: rgba(209, 67, 67, 0.2);
  color: #a92d2d;
}

.assignment-list {
  display: grid;
  gap: 10px;
  max-height: 240px;
  overflow: auto;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(247, 250, 255, 0.9);
}

.assignment-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(198, 213, 235, 0.8);
}

.assignment-access,
.assignment-share {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.assignment-item input {
  width: 18px;
  height: 18px;
  margin: 0;
}

.assignment-share {
  color: var(--muted);
  font-size: 13px;
}

.assignment-empty {
  padding: 14px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  color: var(--muted);
  background: rgba(247, 250, 255, 0.9);
}

.selected-icon-chip {
  display: flex;
  align-items: center;
  min-height: 50px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(247, 250, 255, 0.9);
}

.material-icon-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.material-icon-only {
  display: inline-grid;
  place-items: center;
}

.material-icon-stack {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  line-height: 1.1;
  text-transform: lowercase;
}

.material-symbols-outlined {
  font-family: "Material Symbols Outlined";
  font-weight: 300;
  font-style: normal;
  font-size: 28px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "liga";
  font-variation-settings: "FILL" 0, "wght" 300, "GRAD" -25, "opsz" 24;
}

.material-icon-stack span:last-child,
.material-icon-chip span:last-child {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon-picker {
  display: grid;
  gap: 16px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(247, 250, 255, 0.9);
}

.icon-picker-toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.icon-picker-toolbar input {
  flex: 1 1 260px;
}

.icon-group {
  display: grid;
  gap: 10px;
}

.icon-group-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(86px, 1fr));
  gap: 10px;
}

.icon-option {
  border: 1px solid rgba(198, 213, 235, 0.9);
  background: #fff;
  border-radius: 16px;
  padding: 12px 8px;
  display: grid;
  place-items: center;
  min-height: 84px;
}

.icon-option.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(17, 82, 212, 0.12);
  background: linear-gradient(180deg, #ffffff 0%, #edf4ff 100%);
}

.empty {
  padding: 28px;
  text-align: center;
  color: var(--muted);
}

.footer-note {
  padding: 10px 0 0;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 1100px) {
  .stats,
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 820px) {
  .shell-grid {
    grid-template-columns: 1fr;
  }

  .main {
    padding: 0 16px 24px;
  }

  .sidebar {
    padding: 0 16px;
  }

  .sidebar-card {
    position: static;
  }

  .stats,
  .cards,
  .field-row {
    grid-template-columns: 1fr;
  }

  .topbar {
    padding: 18px 16px;
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (min-width: 821px) {
  .btn {
    height: 40px !important;
    min-height: 40px !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
  }
}