:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --border-color: #30363d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent-primary: #58a6ff;
    --accent-success: #238636;
    --accent-danger: #da3633;
    --accent-warning: #d29922;
    --column-bg: #161b22;
    --hover-bg: #1f242c;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #00f5ff 0%, #7c3aed 50%, #00f5ff 100%);
    background-size: 200% 200%;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.4), 0 0 40px rgba(124, 58, 237, 0.2);
    animation: neonShift 4s ease infinite;
}

@keyframes neonShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-danger {
    background-color: var(--accent-danger);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-danger:hover {
    opacity: 0.9;
}

.board {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    overflow-x: auto;
}

.column {
    background-color: var(--column-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    min-height: 500px;
    display: flex;
    flex-direction: column;
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--hover-bg);
    border-radius: 8px 8px 0 0;
}

.column-title {
    font-weight: 600;
    font-size: 14px;
}

.column-count {
    background-color: var(--border-color);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    color: var(--text-secondary);
}

.column-tasks {
    padding: 12px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.task-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.task-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.task-card.dragging {
    opacity: 0.5;
}

.task-card.blocked {
    border-left: 3px solid var(--accent-danger);
}

.task-card.assigned {
    border-left: 3px solid var(--accent-warning);
}

.task-card.blocked.assigned {
    border-left: 3px solid;
    border-image: linear-gradient(to bottom, var(--accent-danger), var(--accent-warning)) 1;
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.task-name {
    font-weight: 500;
    font-size: 14px;
    line-height: 1.4;
    flex: 1;
    margin-right: 8px;
}

.task-badges {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.badge {
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 500;
}

.badge-priority {
    background-color: var(--accent-primary);
    color: white;
}

.badge-blocked {
    background-color: var(--accent-danger);
    color: white;
}

.badge-assigned {
    background-color: var(--accent-warning);
    color: black;
}

.task-description {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.task-meta {
    font-size: 11px;
    color: var(--text-secondary);
}

.task-actions {
    display: flex;
    gap: 4px;
    margin-top: 8px;
    opacity: 0;
    transition: opacity 0.2s;
}

.task-card:hover .task-actions {
    opacity: 1;
}

.task-btn {
    background: var(--border-color);
    border: none;
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s;
}

.task-btn:hover {
    background: var(--accent-primary);
    color: white;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.close-btn:hover {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

form {
    padding: 20px;
}

.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.form-actions {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.form-actions button {
    flex: 1;
}

/* Drag and Drop */
.column-tasks.drag-over {
    background-color: var(--hover-bg);
    border: 2px dashed var(--accent-primary);
}

/* Loading State */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

/* Error State */
.error {
    background-color: var(--accent-danger);
    color: white;
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
}

/* Responsive */
@media (max-width: 1200px) {
    .board {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .board {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .board {
        grid-template-columns: 1fr;
    }
    
    header {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}