* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f5f7fb;
    color: #1f2937;
}

.page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.header h1 {
    margin: 0 0 6px;
    font-size: 32px;
}

.subtitle {
    margin: 0;
    color: #6b7280;
}

.badge {
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
}

.badge-success {
    background: #dcfce7;
    color: #166534;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.panel {
    background: white;
    border-radius: 12px;
    padding: 18px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.form-panel h2 {
    margin-top: 0;
}

.form-row {
    display: flex;
    flex-direction: column;
    margin-bottom: 14px;
}

.form-row label {
    margin-bottom: 6px;
    font-weight: 600;
}

.form-row input {
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 14px;
}

.form-actions {
    margin-top: 10px;
}

button {
    border: none;
    background: #2563eb;
    color: white;
    padding: 10px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.error-text {
    color: #dc2626;
    min-height: 20px;
    margin-top: 10px;
}

.board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.column {
    background: white;
    border-radius: 12px;
    padding: 16px;
    min-height: 300px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

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

.column-header h3 {
    margin: 0;
}

.count {
    background: #e5e7eb;
    color: #374151;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 13px;
    font-weight: 700;
}

.column-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card {
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 14px;
    background: #fafafa;
}

.card-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 10px;
}

.card-line {
    font-size: 14px;
    margin-bottom: 6px;
}

.card-actions {
    margin-top: 12px;
}

.empty-state {
    color: #6b7280;
    font-size: 14px;
    padding: 8px 0;
}

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