:root {
    --board-bg: linear-gradient(135deg, #e2f0cb 0%, #b5ead7 100%);
    --card-surface: rgba(255, 255, 255, 0.9);
    --text-primary: #374151;
    --mint-accent: #b5ead7;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.03);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
    background: var(--board-bg);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.board-container {
    background: var(--card-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 40px 30px;
    border-radius: 24px;
    width: 100%;
    max-width: 460px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.board-header {
    text-align: center;
    margin-bottom: 25px;
}

.board-header h2 { color: var(--text-primary); font-weight: 700; }
.board-header p { color: #6b7280; font-size: 0.9rem; margin-top: 4px; }

/* Control Input Bar */
.input-panel {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
}

.input-panel input {
    flex: 1;
    padding: 14px 18px;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    outline: none;
    font-size: 0.95rem;
    background: white;
    box-shadow: var(--shadow-sm);
    color: var(--text-primary);
}

.input-panel button {
    background: #374151;
    color: white;
    border: none;
    padding: 0 22px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: background 0.2s, transform 0.2s;
}

.input-panel button:hover {
    background: #1f2937;
    transform: translateY(-1px);
}

/* Badge Tracker */
.counter-badge {
    text-align: left;
    font-size: 0.85rem;
    font-weight: 600;
    color: #4b5563;
    margin-bottom: 12px;
    padding-left: 5px;
}

/* Dynamic Render List Node rules */
.task-list {
    list-style: none;
    max-height: 280px;
    overflow-y: auto;
    padding-right: 4px;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    padding: 14px 18px;
    border-radius: 12px;
    margin-bottom: 10px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--mint-accent);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.task-item span {
    font-size: 0.95rem;
    color: var(--text-primary);
    word-break: break-all;
    padding-right: 10px;
}

.delete-task-btn {
    background: none;
    border: none;
    color: #f87171;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.2s;
    padding: 2px 6px;
}

.delete-task-btn:hover {
    transform: scale(1.15);
}