/* Import font dari Google Fonts (opsional, ganti font sesuai selera) */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

:root {
    /* Warna utama */
    --primary-color: #4cacaf; /* Biru untuk tombol utama/aksi positif */
    --secondary-color: #f44336; /* Merah untuk tombol hapus/aksi negatif */
    --background-color: #f4f7f6; /* Latar belakang halaman */
    --card-background: #ffffff; /* Latar belakang item todo */
    --text-color: #333;
    --completed-text-color: #777;
    --border-color: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 600px;
    background: var(--card-background);
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow-color);
    padding: 30px;
}

/* --- JUDUL --- */
h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 25px;
    font-size: 2em;
    font-weight: 700;
}

/* --- INPUT DAN TOMBOL TAMBAH --- */
.input-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.input-container {
    display: flex;
    gap: 10px;
}

.input-container input[type="text"] {
    flex-grow: 1;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1em;
}

.input-container input[type="date"] {
    width: 150px; /* Lebar tetap untuk input tanggal */
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1em;
    color: var(--text-color);
}

.add-btn {
    background-color: var(--primary-color);
    color: white;
    padding: 12px 15px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 500;
    transition: background-color 0.2s;
}

.add-btn:hover {
    background-color: #43A047; /* Sedikit lebih gelap */
}

/* --- BAGIAN KONTROL (Filter dan Delete All) --- */
.control-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.filter-toggle-btn,
.delete-all-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background-color 0.2s;
}

.filter-toggle-btn:hover {
    background-color: #eee;
}

.delete-all-btn {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
}

.delete-all-btn:hover {
    background-color: var(--secondary-color);
    color: white;
}


/* --- FILTER SECTION --- */
#filterSection {
    display: flex; /* Default display akan diubah oleh JS */
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    padding: 10px 0;
    background-color: #fafafa;
    border-radius: 8px;
    border: 1px dashed var(--border-color);
}

.filter-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9em;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 500;
}

.filter-btn:not(.active):hover {
    background-color: #f0f0f0;
}

/* --- LIST TODO --- */
#todoList {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.todo-item {
    display: grid;
    grid-template-columns: 1fr auto auto auto; /* Task, Date, Status, Actions */
    align-items: center;
    background: var(--card-background);
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 1px 3px var(--shadow-color);
    border-left: 5px solid #2196F3; /* Garis biru default (pending) */
    transition: all 0.3s ease;
}

.todo-item.completed {
    border-left-color: var(--primary-color); /* Garis hijau jika selesai */
    background-color: #e8f5e9; /* Latar belakang sedikit berbeda */
}

.todo-item.completed .task-name {
    text-decoration: line-through;
    color: var(--completed-text-color);
}

.task-name {
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-right: 15px;
}

.task-date {
    font-size: 0.8em;
    color: #999;
    white-space: nowrap;
    margin-right: 15px;
}

/* --- STATUS BADGE --- */
.status-badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75em;
    font-weight: 700;
    text-transform: uppercase;
    white-space: nowrap;
    margin-right: 15px;
}

.status-pending {
    background-color: #ffe0b2; /* Oranye muda */
    color: #ff9800; /* Oranye */
}

.status-completed {
    background-color: #c8e6c9; /* Hijau muda */
    color: var(--primary-color);
}

/* --- ACTION BUTTONS --- */
.action-buttons {
    display: flex;
    gap: 5px;
}

.action-btn {
    padding: 8px 10px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8em;
    font-weight: 500;
    transition: background-color 0.2s, opacity 0.2s;
}

.btn-complete {
    background-color: var(--primary-color);
    color: white;
}

.btn-complete:hover {
    background-color: #43A047;
}

.btn-delete {
    background-color: var(--secondary-color);
    color: white;
}

.btn-delete:hover {
    background-color: #E53935;
}

/* --- NO TASK MESSAGE --- */
.no-task {
    text-align: center;
    color: #999;
    padding: 20px;
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    margin-top: 10px;
    font-style: italic;
}

/* --- RESPONSIVENESS (Opsional) --- */
@media (max-width: 500px) {
    .container {
        padding: 20px;
        margin: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .todo-item {
        /* Tata letak yang lebih baik untuk layar kecil */
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
        gap: 5px 10px;
    }
    
    .task-name {
        grid-column: 1 / 3; /* Ambil seluruh lebar */
        padding-right: 0;
    }

    .task-date {
        grid-row: 2;
        grid-column: 1;
        margin-right: 0;
    }

    .status-badge {
        grid-row: 2;
        grid-column: 2;
        text-align: right;
        margin-right: 0;
    }

    .action-buttons {
        grid-column: 1 / 3;
        grid-row: 3;
        justify-content: flex-end;
        margin-top: 10px;
    }

    .input-container {
        flex-direction: column;
    }
    
    .input-container input[type="date"] {
        width: 100%;
    }
}