/* ===== 待办清单专属样式 ===== */

/* ── 卡片容器 ── */
.todo-card {
    max-width: 640px;
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    backdrop-filter: blur(18px);
    box-shadow: 0 18px 42px var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* ── 输入区 ── */
.todo-form {
    display: flex;
    gap: 0.6rem;
    padding: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.todo-input {
    flex: 1;
    min-width: 0;
    padding: 0.7rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: color-mix(in srgb, var(--bg-soft) 60%, transparent);
    color: var(--text);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.todo-input::placeholder {
    color: var(--text-muted);
}

.todo-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.priority-select {
    padding: 0 0.6rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: color-mix(in srgb, var(--bg-soft) 60%, transparent);
    color: var(--text);
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
}

.add-btn {
    padding: 0.7rem 1.1rem;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: white;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: background 160ms ease, transform 120ms ease;
    box-shadow: 0 4px 16px color-mix(in srgb, var(--accent) 40%, transparent);
}

.add-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.add-btn:active {
    transform: translateY(0);
}

/* ── 筛选标签 ── */
.todo-tabs {
    display: flex;
    gap: 0.4rem;
    padding: 0.85rem 1.25rem 0;
}

.tab {
    padding: 0.35rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.82rem;
    font-weight: 650;
    cursor: pointer;
    transition: all 150ms ease;
}

.tab:hover {
    border-color: var(--accent-hover);
    color: var(--text);
}

.tab.is-active {
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    color: var(--accent);
}

/* ── 列表 ── */
.todo-list {
    margin: 0;
    padding: 0.5rem 1.25rem 0.25rem;
    list-style: none;
}

.todo-item {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.6rem 0.25rem;
    border-bottom: 1px solid var(--border);
}

.todo-item:last-child {
    border-bottom: none;
}

.todo-check {
    flex-shrink: 0;
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--accent);
    cursor: pointer;
}

.todo-text {
    flex: 1;
    min-width: 0;
    font-size: 0.95rem;
    line-height: 1.5;
    word-break: break-word;
    cursor: text;
}

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

.priority-tag {
    flex-shrink: 0;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
}

.priority-tag.p1 {
    color: #38bdf8;
    background: color-mix(in srgb, #38bdf8 14%, transparent);
}

.priority-tag.p2 {
    color: #f59e0b;
    background: color-mix(in srgb, #f59e0b 14%, transparent);
}

.priority-tag.p3 {
    color: #ef4444;
    background: color-mix(in srgb, #ef4444 14%, transparent);
}

.todo-delete {
    flex-shrink: 0;
    width: 1.6rem;
    height: 1.6rem;
    display: grid;
    place-items: center;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 150ms ease, background 150ms ease, color 150ms ease;
}

.todo-item:hover .todo-delete,
.todo-delete:focus-visible {
    opacity: 1;
}

.todo-delete:hover {
    background: color-mix(in srgb, #ef4444 14%, transparent);
    color: #ef4444;
}

.todo-delete:focus-visible,
.add-btn:focus-visible,
.tab:focus-visible,
.clear-btn:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--accent) 68%, white);
    outline-offset: 2px;
}

/* ── 行内编辑 ── */
.todo-edit {
    flex: 1;
    min-width: 0;
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--accent);
    border-radius: 6px;
    background: color-mix(in srgb, var(--bg-soft) 60%, transparent);
    color: var(--text);
    font-size: 0.95rem;
    outline: none;
}

/* ── 空状态 ── */
.empty-state {
    margin: 0;
    padding: 2.5rem 1.25rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.92rem;
}

.empty-state.is-hidden {
    display: none;
}

/* ── 底部 ── */
.todo-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.85rem 1.25rem;
    border-top: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg-soft) 45%, transparent);
}

.todo-footer span {
    color: var(--text-muted);
    font-size: 0.82rem;
}

.clear-btn {
    padding: 0.35rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 650;
    cursor: pointer;
    transition: all 150ms ease;
}

.clear-btn:hover:not(:disabled) {
    border-color: #ef4444;
    color: #ef4444;
}

.clear-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ── 移动端 ── */
@media (max-width: 520px) {
    .todo-form {
        flex-wrap: wrap;
    }

    .todo-input {
        flex-basis: 100%;
    }

    .todo-form .add-btn {
        margin-left: auto;
    }

    .todo-footer {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
}