/* 
  CSS untuk To-Do List 
  Dibuat simpel supaya gampang dimengerti tapi tetep kelihatan keren!
*/

/* Variable warna untuk gampang ganti tema (Light/Dark Mode) */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --transition: all 0.3s ease;
}

/* Warna untuk Dark Mode */
[data-theme="dark"] {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    transition: var(--transition);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding-top: 50px;
}

.container {
    width: 90%;
    max-width: 500px;
    animation: fadeIn 0.8s ease;
}

/* Animasi Muncul */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(to right, var(--primary-color), #a855f7);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Tombol Ganti Tema */
.theme-toggle {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

/* Kotak Input */
.input-group {
    display: flex;
    gap: 10px;
    background: var(--card-bg);
    padding: 10px;
    border-radius: 16px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

input[type="text"] {
    flex: 1;
    border: none;
    background: transparent;
    padding: 10px 15px;
    font-size: 1rem;
    color: var(--text-main);
    outline: none;
}

.add-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.add-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

/* Filter & Counter */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.filters button {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    margin-right: 10px;
    font-weight: 500;
    transition: var(--transition);
}

.filters button.active {
    color: var(--primary-color);
    font-weight: 700;
}

.clear-btn {
    background: transparent;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    font-size: 0.8rem;
    opacity: 0.8;
}

.clear-btn:hover {
    opacity: 1;
    text-decoration: underline;
}

/* List Tugas */
#todo-list {
    list-style: none;
}

.todo-item {
    background: var(--card-bg);
    margin-bottom: 12px;
    padding: 15px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 15px;
    border: 1px solid var(--border-color);
    animation: slideIn 0.4s ease forwards;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.todo-item.completed {
    opacity: 0.6;
}

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

.todo-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.task-info {
    flex: 1;
}

.task-text {
    display: block;
    font-weight: 500;
    margin-bottom: 4px;
}

.timestamp {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.actions {
    display: flex;
    gap: 8px;
}

.action-btn {
    background: #f1f5f9;
    border: none;
    padding: 6px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

[data-theme="dark"] .action-btn {
    background: #334155;
}

.edit-btn:hover { color: var(--primary-color); }
.delete-btn:hover { color: var(--danger-color); }

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 10px;
    display: block;
}

/* Responsive */
@media (max-width: 480px) {
    .container { width: 95%; }
    .controls { flex-direction: column; gap: 15px; align-items: flex-start; }
}