/* Auth login & console account shell */
.login-shell {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(32px, 7vh, 80px) 20px;
  min-height: 100svh;
}

.login-stack {
  width: min(100%, 460px);
  display: grid;
  gap: clamp(22px, 3.4vh, 30px);
}

.login-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--orange-strong);
  font-size: clamp(20px, 2.2vw, 24px);
  font-weight: 800;
  line-height: 1;
}

.login-brand .logo-box {
  width: 46px;
  height: 46px;
  border-radius: 10px;
}

.login-brand .logo-box svg {
  width: 27px;
  height: 27px;
}

.login-shell .login-card {
  width: 100%;
}

.login-shell .login-card-auth header {
  margin-bottom: clamp(24px, 3.4vh, 34px);
  text-align: center;
}

.login-form {
  display: grid;
  gap: 20px;
}

.login-field {
  display: grid;
  gap: 9px;
}

.login-field > span:first-child {
  color: #4f5a6c;
  font-size: 14px;
  font-weight: 900;
}

.login-field input {
  width: 100%;
  min-height: 56px;
  padding: 0 16px;
  border: 1px solid #e3e8ef;
  border-radius: 14px;
  color: #111c2f;
  background: #fbfcfe;
  font: inherit;
  font-size: 17px;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.login-field input::placeholder {
  color: #b1b9c6;
}

.login-field input:focus {
  border-color: rgba(255, 106, 22, 0.64);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255, 106, 22, 0.12);
}

.password-wrap {
  position: relative;
  display: block;
}

.password-wrap input {
  padding-right: 76px;
}

.password-toggle {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  min-width: 54px;
  min-height: 38px;
  border: 0;
  border-radius: 10px;
  color: var(--orange-strong);
  background: var(--orange-soft);
  font-size: 13px;
  font-weight: 900;
  cursor: pointer;
}

.password-toggle:hover {
  background: #ffe6cc;
}

.login-error {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid #ffd9d3;
  border-radius: 12px;
  color: #b83725;
  background: #fff4f1;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
}

.login-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  border: 0;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, #ff7d1f 0%, #f25a10 100%);
  box-shadow: 0 18px 32px rgba(242, 90, 16, 0.24);
  font-size: 18px;
  font-weight: 900;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

.login-submit:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 22px 38px rgba(242, 90, 16, 0.28);
}

.login-submit:disabled {
  color: rgba(255, 255, 255, 0.82);
  background: #f6a06f;
  box-shadow: none;
  cursor: wait;
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.topbar-actions-mount {
  display: flex;
  align-items: center;
  gap: 10px;
}

.class-switcher,
.avatar-wrap {
  position: relative;
}

.class-pill {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-height: 52px;
  padding: 6px 13px 6px 15px;
  border: 1px solid rgba(240, 220, 201, 0.95);
  border-radius: 16px;
  color: #566174;
  background: rgba(255, 255, 255, 0.88);
  text-align: left;
  cursor: pointer;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.class-pill:hover,
.class-pill[aria-expanded="true"] {
  border-color: rgba(255, 106, 22, 0.48);
  background: #fff;
  box-shadow: 0 14px 26px rgba(255, 106, 22, 0.1);
}

.class-pill-icon {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  color: var(--orange-strong);
  background: var(--orange-soft);
  flex: 0 0 auto;
}

.class-pill-icon svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.class-pill-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.class-pill-copy span {
  color: #929cac;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.class-pill-copy strong {
  max-width: 178px;
  overflow: hidden;
  color: #111c2f;
  font-size: 14px;
  font-weight: 900;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.class-pill-chevron {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: #98a2b3;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 180ms ease;
}

.class-pill[aria-expanded="true"] .class-pill-chevron {
  transform: rotate(180deg);
}

.class-menu,
.avatar-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 80;
  width: 286px;
  padding: 10px;
  border: 1px solid #ede3d8;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 24px 54px rgba(20, 29, 44, 0.16);
}

.class-menu[hidden],
.avatar-menu[hidden] {
  display: none;
}

.class-menu-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px 10px;
  color: #798397;
  font-size: 12px;
  font-weight: 800;
}

.class-menu-head small {
  color: #a0a9b9;
  font-size: 11px;
  font-weight: 700;
}

.class-menu-list {
  display: grid;
  gap: 4px;
  max-height: 248px;
  overflow: auto;
}

.class-option {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  gap: 2px 10px;
  width: 100%;
  padding: 10px 11px;
  border: 0;
  border-radius: 12px;
  color: #111c2f;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.class-option:hover {
  background: #faf7f3;
}

.class-option.is-active {
  background: var(--orange-soft);
}

.class-option-name {
  overflow: hidden;
  font-size: 14px;
  font-weight: 900;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.class-option-meta {
  overflow: hidden;
  color: #8791a2;
  font-size: 12px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.class-option-check {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  width: 17px;
  height: 17px;
  fill: none;
  stroke: var(--orange-strong);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  visibility: hidden;
}

.class-option.is-active .class-option-check {
  visibility: visible;
}

.class-menu-empty {
  margin: 0;
  padding: 14px 11px;
  color: #8b95a6;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
}

.class-menu-add {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-top: 8px;
  padding: 11px 12px;
  border-top: 1px dashed #ede3d8;
  color: var(--orange-strong);
  font-size: 14px;
  font-weight: 900;
}

.class-menu-add:hover {
  color: #d94b06;
}

.class-menu-add span {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 8px;
  background: var(--orange-soft);
  font-size: 17px;
  line-height: 1;
}

.teacher-avatar {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(240, 220, 201, 0.98);
  border-radius: 50%;
  color: var(--orange-strong);
  background: #fff;
  box-shadow: 0 10px 22px rgba(20, 29, 44, 0.08);
  cursor: pointer;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.teacher-avatar:hover,
.teacher-avatar[aria-expanded="true"] {
  border-color: rgba(255, 106, 22, 0.55);
  box-shadow: 0 12px 26px rgba(255, 106, 22, 0.18);
  transform: translateY(-1px);
}

.teacher-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-fallback {
  color: #f2721c;
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
}

.avatar-menu {
  width: 218px;
  padding: 8px;
}

.avatar-menu-head {
  margin: 0 0 6px;
  padding: 8px 10px 10px;
  border-bottom: 1px solid #f2ece4;
  color: #8b95a6;
  font-size: 12px;
  font-weight: 700;
}

.avatar-menu-head strong {
  color: #111c2f;
  font-size: 13px;
  font-weight: 900;
}

.avatar-menu button {
  width: 100%;
  min-height: 38px;
  padding: 0 10px;
  border: 0;
  border-radius: 10px;
  color: #4f5a6c;
  background: transparent;
  text-align: left;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.avatar-menu button:hover {
  background: #faf7f3;
  color: #111c2f;
}

.avatar-menu button.is-danger {
  color: #bd3b2a;
}

.avatar-menu button.is-danger:hover {
  background: #fff4f1;
}

/* Add class page */
.class-setup-shell {
  padding-bottom: 72px;
}

.class-setup-main {
  width: min(100%, 940px);
  margin: clamp(42px, 6vh, 72px) auto 0;
  display: grid;
  gap: 18px;
}

.class-setup-heading {
  max-width: 720px;
}

.class-setup-heading h1 {
  margin: 0;
  color: #111c2f;
  font-size: clamp(38px, 4.4vw, 56px);
  line-height: 1.1;
  font-weight: 900;
}

.class-setup-heading p:not(.console-kicker) {
  margin: 16px 0 0;
  color: #647084;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.6;
  font-weight: 500;
}

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

.class-setup-card {
  padding: 26px 28px 28px;
  border: 1px solid #ede2d6;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 18px 38px rgba(29, 34, 43, 0.06);
}

.class-setup-card > header {
  margin-bottom: 20px;
}

.class-setup-card h2 {
  margin: 0;
  color: #111c2f;
  font-size: 21px;
  font-weight: 900;
}

.class-setup-card > header p {
  margin: 7px 0 0;
  color: #7c879a;
  font-size: 14px;
  line-height: 1.5;
}

.setup-field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.class-setup-card .field-control {
  padding: 0;
}

.class-setup-card .manual-student-row .field-control {
  padding: 0;
}

.method-switch {
  display: flex;
  gap: 6px;
  padding: 6px;
  border-radius: 14px;
  background: #f7f3ee;
}

.method-tab {
  flex: 1;
  min-height: 44px;
  border: 0;
  border-radius: 10px;
  color: #6c7789;
  background: transparent;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.method-tab.is-active {
  color: var(--orange-strong);
  background: #fff;
  box-shadow: 0 6px 16px rgba(29, 34, 43, 0.08);
}

.method-panel {
  margin-top: 16px;
}

.method-panel[hidden] {
  display: none;
}

.class-excel-tile {
  min-height: 156px;
}

.class-excel-hint {
  margin: 12px 0 0;
  color: #7c879a;
  font-size: 13px;
  line-height: 1.55;
}

.manual-student-list {
  display: grid;
  gap: 12px;
}

.manual-student-row {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) 42px;
  gap: 12px;
  align-items: end;
}

.manual-student-row .field-control {
  gap: 6px;
}

.manual-student-row .field-control span {
  font-size: 12px;
}

.manual-student-row .field-control input {
  min-height: 46px;
  border-radius: 10px;
}

.remove-student-row {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 46px;
  border: 1px solid #f0dfd5;
  border-radius: 10px;
  color: #b26a4a;
  background: #fff8f4;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.remove-student-row:hover {
  border-color: #f3c9b6;
  color: #c3451f;
  background: #fff1ea;
}

.remove-student-row:disabled {
  color: #c9c2bc;
  background: #faf8f6;
  border-color: #eee8e2;
  cursor: not-allowed;
}

.add-student-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px dashed rgba(255, 106, 22, 0.42);
  border-radius: 12px;
  color: var(--orange-strong);
  background: rgba(255, 240, 220, 0.45);
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
}

.add-student-row:hover {
  border-color: rgba(255, 106, 22, 0.7);
  background: var(--orange-soft);
}

.class-setup-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 4px 2px;
}

.class-setup-status {
  color: #7c879a;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.class-setup-status.is-error {
  color: #bd3b2a;
}

.class-setup-status.is-success {
  color: #1f8a5b;
}

.class-setup-submit {
  min-height: 52px;
  padding: 0 26px;
  font-size: 16px;
}

.default-class-tag {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 7px;
  border-radius: 999px;
  color: var(--orange-strong);
  background: var(--orange-soft);
  font-size: 10px;
  font-weight: 900;
  vertical-align: middle;
}

@media (max-width: 900px) {
  .console-topbar {
    gap: 14px;
    flex-wrap: wrap;
  }

  .topbar-actions {
    width: 100%;
    gap: 8px;
    justify-content: space-between;
  }

  .topbar-actions-mount {
    flex: 1;
    justify-content: flex-end;
  }

  .class-pill-copy strong {
    max-width: 160px;
  }

  .class-setup-card {
    padding: 20px;
  }
}

@media (max-width: 620px) {
  .console-topbar {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px 10px;
  }

  .topbar-actions,
  .topbar-actions-mount {
    display: contents;
  }

  .console-brand {
    grid-column: 2;
    grid-row: 1;
    justify-self: start;
    gap: 9px;
    min-width: 0;
    font-size: 16px;
    white-space: nowrap;
  }

  .console-topbar > .console-brand:first-child {
    grid-column: 1;
  }

  .console-brand .logo-box {
    width: 40px;
    height: 40px;
    border-radius: 9px;
  }

  .console-brand .logo-box svg {
    width: 24px;
    height: 24px;
  }

  .back-link {
    grid-column: 1;
    grid-row: 1;
    justify-self: start;
    min-height: 38px;
    padding: 0 12px;
    font-size: 14px;
    white-space: nowrap;
  }

  .avatar-wrap {
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
  }

  .class-switcher {
    grid-column: 1 / -1;
    grid-row: 2;
    min-width: 0;
  }

  .class-pill {
    width: 100%;
    min-height: 46px;
    gap: 9px;
    justify-content: flex-start;
    padding: 5px 12px;
  }

  .class-pill-icon {
    width: 30px;
    height: 30px;
    border-radius: 10px;
  }

  .class-pill-icon svg {
    width: 17px;
    height: 17px;
  }

  .class-pill-copy {
    flex: 1;
  }

  .class-pill-copy span {
    display: none;
  }

  .class-pill-copy strong {
    max-width: none;
    font-size: 14px;
  }

  .class-pill-chevron {
    margin-left: auto;
  }

  .teacher-avatar {
    width: 42px;
    height: 42px;
  }

  .avatar-fallback {
    font-size: 19px;
  }

  .class-menu {
    right: 0;
    width: 100%;
    max-height: min(420px, 64vh);
    overflow: auto;
  }

  .avatar-menu {
    right: 0;
  }

  .setup-field-grid {
    grid-template-columns: 1fr;
  }

  .manual-student-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 36px;
    gap: 8px;
  }

  .remove-student-row {
    width: 36px;
    height: 42px;
  }

  .class-setup-actions {
    align-items: stretch;
  }

  .class-setup-submit {
    width: 100%;
  }

  .console-shell {
    padding: 22px 16px 40px;
  }

  .console-kicker {
    margin-bottom: 10px;
    font-size: 15px;
  }

  .module-grid {
    gap: 16px;
  }

  .module-tools {
    gap: 10px;
  }

  .grading-shell {
    padding: 22px 16px 42px;
  }

  .grading-header {
    margin: 30px auto 22px;
  }

  .grading-header h1 {
    font-size: clamp(28px, 8vw, 36px);
    line-height: 1.2;
  }

  .grading-header p:not(.console-kicker) {
    margin-top: 12px;
    font-size: 15.5px;
    line-height: 1.65;
  }
}

@media (max-width: 430px) {
  .console-topbar {
    gap: 10px 8px;
  }

  .console-brand {
    font-size: 15px;
  }

  .back-link {
    padding: 0 12px;
  }
}

@media (max-width: 640px) {
  .login-shell {
    padding: 24px 16px;
  }

  .login-stack {
    gap: 20px;
  }

  .login-brand {
    font-size: 20px;
  }

  .login-brand .logo-box {
    width: 42px;
    height: 42px;
  }

  .login-brand .logo-box svg {
    width: 25px;
    height: 25px;
  }

  .login-shell .login-card {
    padding: 28px 20px 24px;
    border-radius: 22px;
  }

  .login-shell .login-card h1 {
    font-size: 28px;
  }

  .login-shell .login-card header p {
    font-size: 15px;
  }
}