*,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    min-height: 100vh;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #1e293b 0, #020617 50%, #000 100%);
    color: #e5e7eb;
  }
  
  /* Topbar */
  
  .topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: linear-gradient(to right, rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.75));
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(148, 163, 184, 0.35);
  }
  
  .logo {
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 1.1rem;
    color: #e5e7eb;
  }
  
  .nav-links a {
    color: #9ca3af;
    margin-left: 20px;
    text-decoration: none;
    font-size: 0.9rem;
    position: relative;
    padding-bottom: 4px;
    transition: color 0.18s ease-out;
  }
  
  .nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, #3b82f6, #a855f7);
    border-radius: 999px;
    transition: width 0.18s ease-out;
  }
  
  .nav-links a:hover {
    color: var(--text);
  }
  
  .nav-links a:hover::after {
    width: 100%;
  }
  
  /* Layout */
  
  .container {
    max-width: 1180px;
    margin: 24px auto 64px;
    padding: 0 16px;
    display: grid;
    grid-template-columns: 1.1fr 1.1fr;
    grid-template-rows: auto auto auto;
    gap: 20px;
  }
  
  .panel {
    background: radial-gradient(circle at top left, rgba(30, 64, 175, 0.22), rgba(15, 23, 42, 0.98));
    border-radius: 18px;
    border: 1px solid rgba(148, 163, 184, 0.35);
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.9);
    padding: 20px 22px 22px;
    position: relative;
    overflow: hidden;
  }
  
  .panel::before {
    content: "";
    position: absolute;
    inset: -80%;
    background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.12), transparent 65%);
    opacity: 0.7;
    pointer-events: none;
  }
  
  .panel > * {
    position: relative;
    z-index: 1;
  }
  
  .panel.wide {
    grid-column: 1 / -1;
  }
  
  /* Headings */
  
  h2 {
    margin: 0 0 6px;
    font-size: 1.3rem;
  }
  
  .subtitle {
    margin: 0 0 18px;
    color: #9ca3af;
    font-size: 0.88rem;
  }
  
  /* Forms */
  
  .form {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  
  .form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  
  .form-group label {
    font-size: 0.86rem;
    color: #9ca3af;
  }
  
  .form-group label span {
    color: #3b82f6;
  }
  
  input,
  textarea,
  select {
    background: rgba(15, 23, 42, 0.7);
    color: #e5e7eb;
    border-radius: 10px;
    border: 1px solid rgba(148, 163, 184, 0.25);
    padding: 8px 10px;
    font-size: 0.88rem;
    outline: none;
    transition: border-color 0.18s ease-out, box-shadow 0.18s ease-out, background-color 0.18s ease-out, transform 0.08s ease-out;
  }
  
  input:focus,
  textarea:focus,
  select:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.5);
    background-color: rgba(15, 23, 42, 0.95);
    transform: translateY(-1px);
  }
  
  textarea {
    resize: vertical;
    min-height: 70px;
  }
  
  /* Buttons */
  
  .btn {
    border-radius: 999px;
    padding: 8px 14px;
    border: 0;
    cursor: pointer;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: background-color 0.18s ease-out, transform 0.18s ease-out, box-shadow 0.18s ease-out, opacity 0.15s ease-out;
  }
  
  .btn.primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: #e5f0ff;
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.7);
  }
  
  .btn.primary:hover {
    transform: translateY(-1px) translateZ(0);
    box-shadow: 0 12px 29px rgba(37, 99, 235, 0.85);
  }
  
  .btn.primary:active {
    transform: translateY(1px) scale(0.99);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.7);
  }
  
  .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
  }
  
  .hint {
    margin: 0;
    font-size: 0.8rem;
    color: #9ca3af;
  }
  
  /* Projects list */
  
  .card-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    max-height: 260px;
    overflow-y: auto;
    padding-right: 4px;
  }
  
  .card-list.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    font-size: 0.9rem;
    color: var(--text-muted);
  }
  
  .project-card {
    padding: 10px 11px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.85));
    border: 1px solid rgba(148, 163, 184, 0.5);
    cursor: pointer;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4px 12px;
    align-items: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
  }
  
  .project-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.9);
    border-color: var(--accent);
  }
  
  .project-card.active {
    border-color: var(--accent-strong);
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.7);
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 64, 175, 0.93));
  }
  
  .project-title {
    font-size: 0.95rem;
  }
  
  .project-meta {
    font-size: 0.78rem;
    color: #9ca3af;
  }
  
  .project-tag {
    border-radius: 999px;
    padding: 4px 9px;
    font-size: 0.74rem;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.6);
  }
  
  /* Tasks section */
  
  .tasks-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 14px;
  }
  
  #tasks-team-members {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: flex-end;
  }
  
  .member-pill {
    padding: 4px 9px;
    border-radius: 999px;
    font-size: 0.78rem;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.65);
  }
  
  .tasks-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.3fr);
    gap: 16px;
    align-items: flex-start;
  }
  
  .task-column {
    background: rgba(15, 23, 42, 0.9);
    border-radius: 16px;
    border: 1px solid rgba(148, 163, 184, 0.27);
    padding: 12px 13px 13px;
  }
  
  .task-column h3 {
    margin: 0 0 8px;
    font-size: 1rem;
  }
  
  .task-columns-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }
  
  .task-status-col h4 {
    margin: 0 0 6px;
    font-size: 0.88rem;
    color: #9ca3af;
  }
  
  .task-list {
    min-height: 70px;
    max-height: 210px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  
  .task-card {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 64, 175, 0.7));
    border-radius: 12px;
    padding: 7px 9px;
    border: 1px solid rgba(148, 163, 184, 0.5);
    font-size: 0.8rem;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4px 8px;
  }
  
  .task-title {
    font-weight: 500;
  }
  
  .task-meta {
    color: #9ca3af;
    font-size: 0.77rem;
  }
  
  .task-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
  }
  
  .task-status-badge {
    padding: 3px 7px;
    border-radius: 999px;
    font-size: 0.7rem;
  }
  
  .badge-todo {
    background: rgba(248, 250, 252, 0.05);
    border: 1px solid rgba(148, 163, 184, 0.75);
  }
  
  .badge-progress {
    background: rgba(249, 115, 22, 0.12);
    border: 1px solid rgba(249, 115, 22, 0.7);
  }
  
  .badge-done {
    background: rgba(22, 163, 74, 0.14);
    border: 1px solid rgba(22, 163, 74, 0.75);
  }
  
  .task-actions select {
    font-size: 0.74rem;
    padding: 3px 7px;
  }
  
  /* About & footer */
  
  #about-section ul {
    padding-left: 18px;
    margin: 4px 0 0;
    font-size: 0.9rem;
  }
  
  .footer {
    text-align: center;
    font-size: 0.8rem;
    color: #9ca3af;
    padding: 16px 10px 24px;
    border-top: 1px solid rgba(148, 163, 184, 0.3);
    background: linear-gradient(to top, rgba(15, 23, 42, 0.9), transparent);
  }
  
  /* Scrollbars (optional, looks nicer) */
  
  .card-list::-webkit-scrollbar,
  .task-list::-webkit-scrollbar {
    width: 6px;
  }
  
  .card-list::-webkit-scrollbar-thumb,
  .task-list::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.6);
    border-radius: 999px;
  }
  
  /* Responsive */
  
  @media (max-width: 900px) {
    .container {
      grid-template-columns: 1fr;
      grid-template-rows: auto;
    }
  
    #create-section,
    #projects-section,
    #tasks-section,
    #about-section {
      grid-column: 1 / -1;
    }
  
    .tasks-layout {
      grid-template-columns: 1fr;
    }
  
    .tasks-header {
      flex-direction: column;
      align-items: flex-start;
    }
  
    #tasks-team-members {
      justify-content: flex-start;
    }
  }
  
  @media (max-width: 640px) {
    .topbar {
      padding: 10px 14px;
    }
  
    .nav-links {
      font-size: 0.8rem;
    }
  
    .container {
      margin-top: 18px;
    }
  
    .panel {
      padding: 16px 14px 18px;
      border-radius: 14px;
    }
  
    .task-columns-grid {
      grid-template-columns: 1fr;
    }
  }