.tasks-page {
  padding: 20px 0 40px;
}

.tasks-container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

.admin-trigger {
  position: fixed;
  bottom: 15px;
  right: 15px;
  width: 15px;
  height: 15px;
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s;
  z-index: 9999;
}

.admin-trigger:hover {
  width: 50px;
  height: 50px;
  background: rgba(56, 189, 248, 0.9);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.admin-trigger:active {
  transform: scale(0.95);
}

.tasks-header {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 20px 24px;
  border-radius: 16px;
  box-shadow: var(--glow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.tasks-header h1 {
  margin: 0;
  color: var(--text);
  font-size: 26px;
}

.logo-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: var(--glow);
}

.admin-panel {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.btn-change-password,
.btn-logout,
.btn-add,
.btn-new-task,
.btn-primary,
.btn-delete {
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-change-password,
.btn-new-task,
.btn-primary {
  background: linear-gradient(135deg, #38bdf8, #6366f1);
  color: #0b1224;
  font-weight: 700;
}

.btn-change-password,
.btn-logout {
  padding: 10px 14px;
}

.btn-logout {
  background: rgba(244, 67, 54, 0.15);
  border-color: rgba(244, 67, 54, 0.4);
  color: #fecaca;
}

.btn-add {
  background: rgba(76, 175, 80, 0.2);
  border-color: rgba(76, 175, 80, 0.45);
  color: #bbf7d0;
  padding: 10px 12px;
}

.btn-new-task {
  padding: 12px 20px;
}

.btn-primary {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
}

.btn-delete {
  background: rgba(244, 67, 54, 0.15);
  border-color: rgba(244, 67, 54, 0.4);
  color: #fecaca;
  padding: 8px 12px;
}

.btn-change-password:hover,
.btn-logout:hover,
.btn-add:hover,
.btn-new-task:hover,
.btn-primary:hover,
.btn-delete:hover {
  transform: translateY(-1px);
}

.main-content {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 20px;
}

.main-content.public-view {
  grid-template-columns: 1fr;
}

.sidebar,
.content,
.login-container,
.modal-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.sidebar,
.content {
  padding: 24px;
}

.sidebar h2,
.content-header h2,
.modal-header h3,
.login-container h2 {
  color: var(--text);
}

.class-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.class-item {
  padding: 11px 12px;
  margin-bottom: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s;
}

.class-item:hover,
.class-item.active {
  background: rgba(125, 211, 252, 0.15);
  border-color: rgba(125, 211, 252, 0.5);
}

.btn-delete-class {
  background: transparent;
  border: none;
  color: #fecaca;
  cursor: pointer;
}

.add-class-form {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.add-class-input {
  display: flex;
  gap: 8px;
}

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

.class-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.class-filter-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
}

.class-filter-btn.active,
.class-filter-btn:hover {
  background: rgba(125, 211, 252, 0.15);
  border-color: rgba(125, 211, 252, 0.5);
  color: var(--text);
}

.tasks-list {
  display: grid;
  gap: 14px;
}

.task-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-left: 4px solid #7dd3fc;
  border-radius: 12px;
  padding: 16px;
}

.task-header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.task-title {
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
}

.task-meta {
  color: var(--muted);
  font-size: 12px;
}

.task-type-badge {
  display: inline-block;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(125, 211, 252, 0.2);
}

.task-content {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.55;
}

.task-content a,
.file-link {
  color: var(--accent);
}

.task-content img,
.paste-preview {
  max-width: 100%;
  border-radius: 8px;
}

.task-actions {
  margin-top: 12px;
  display: flex;
  justify-content: flex-end;
}

.file-download {
  padding: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.empty-state {
  text-align: center;
  padding: 45px 20px;
  color: var(--muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.modal,
.login-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal.active,
.login-modal.active {
  display: flex;
}

.modal-content,
.login-container {
  width: min(680px, 96vw);
  padding: 24px;
}

.login-container {
  max-width: 420px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.btn-close {
  background: transparent;
  color: var(--muted);
  border: none;
  font-size: 28px;
  cursor: pointer;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
}

.form-group input,
.form-group select,
.form-group textarea,
input[type="file"] {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.paste-area {
  border: 1px dashed rgba(125, 211, 252, 0.6);
  border-radius: 10px;
  padding: 28px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  background: rgba(255, 255, 255, 0.03);
}

.paste-area.has-image {
  padding: 10px;
}

.file-info {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.error-message {
  background: rgba(244, 67, 54, 0.15);
  border: 1px solid rgba(244, 67, 54, 0.4);
  color: #fecaca;
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 12px;
}

.hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .main-content {
    grid-template-columns: 1fr;
  }

  .tasks-header {
    flex-direction: column;
    align-items: flex-start;
  }
}