/* zcode.177117.xyz Todo App 样式 */
:root {
    --bg: #f5f7fa;
    --card: #ffffff;
    --primary: #4f7cff;
    --primary-hover: #3a63d8;
    --text: #1f2937;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --danger: #ef4444;
    --success: #10b981;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding: 40px 20px;
}

.container {
    max-width: 560px;
    margin: 0 auto;
    background: var(--card);
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    padding: 32px;
}

header { text-align: center; margin-bottom: 24px; }
header h1 { font-size: 28px; font-weight: 700; }
.subtitle { color: var(--text-muted); font-size: 13px; margin-top: 6px; }

.todo-form {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
}
.todo-form input {
    flex: 1;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    outline: none;
    transition: border-color 0.15s;
}
.todo-form input:focus { border-color: var(--primary); }
.todo-form button {
    padding: 12px 22px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}
.todo-form button:hover { background: var(--primary-hover); }

.todo-list { display: flex; flex-direction: column; gap: 8px; }

.todo-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: background 0.15s;
}
.todo-item:hover { background: #fafbfc; }
.todo-item.done .title {
    text-decoration: line-through;
    color: var(--text-muted);
}
.todo-item label {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    cursor: pointer;
}
.todo-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--success);
    cursor: pointer;
}
.title { font-size: 15px; word-break: break-word; }

.btn-delete {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.15s;
}
.btn-delete:hover { color: var(--danger); background: #fef2f2; }

.loading, .empty, .error {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
    font-size: 14px;
}
.error { color: var(--danger); }

.stats {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 13px;
    text-align: center;
}

@media (max-width: 480px) {
    .container { padding: 20px; }
    header h1 { font-size: 22px; }
}